Martensite transformation triggered with intense THz pulses

Masaya Nagai, Yuhei Higashitani, Masaaki Ashida, Koichi Kusakabe, Hirohiko Niioka, Azusa N. Hattori, Hidekazu Tanaka, Goro Isoyama, Norimasa Ozaki

2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)　2023/09/17　Research paper (international conference proceedings)

Mechanisms of photoluminescence in cerium oxide pellets with different types of defects

Masaya Nagai, Yuto Furutani, Hikaru Takehara, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

Journal of Luminescence　Vol. 260　p. 119859-119859　2023/08　Research paper (scientific journal)

Damped oscillation of a magnetically-trapped superconducting micro-particle in superfluid helium: measurement of viscosity based on a hydrodynamic analysis

Shota Sasaki, Jun Naoi, Masato Takamune, Daisei Kondo, Yuta Takahashi, Mitsutaka Kumakura, Masaaki Ashida, Yoshiki Moriwaki

Applied Physics Express　Vol. 16　No. 8　p. 082003-082003　2023/08/01　Research paper (scientific journal)

Phonons Damped by Proton Doping in Barium Zirconate

Hikaru Takehara, Masaya Nagai, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

The Journal of Physical Chemistry C　Vol. 127　No. 23　p. 10913-10921　2023/06/02　Research paper (scientific journal)

Dynamics of quantized vortices in superfluid helium visualized with silicon nanoparticles

Yosuke Minowa, Yuki Yasui, Shota Aoyagi, Masaaki Ashida

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 12606　2023/04　Research paper (international conference proceedings)

Determining the Atomic Arrangement near the Oxygen Vacancy in Yttrium-Doped Barium Zirconate by Photoluminescence Spectroscopy

Hikaru Takehara, Masaya Nagai, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

Journal of Physical Chemistry C　Vol. 127　No. 2　p. 968-976　2023/01/19　Research paper (scientific journal)

Strong Proton-Phonon Coupling in Perovskite-type Electrolyte of Proton-Conducting Fuel Cell

Masaya Nagai, Hikaru Takehara, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2023　Research paper (international conference proceedings)

Direct synthesis of group IV-vacancy center-containing nanodiamonds via detonation process using aromatic compound as group IV element source

Yuto Makino, Taro Yoshikawa, Akihiko Tsurui, Ming Liu, Gaku Yamagishi, Masahiro Nishikawa, Tomoaki Mahiko, Mitsuru Ohno, Masaaki Ashida, Naoto Okuyama

Diamond and Related Materials　Vol. 130　p. 109493-109493　2022/12　Research paper (scientific journal)

Effect of Particle Size on the Optical Properties of Silicon-Vacancy Centers in Nanodiamonds Fabricated by a Detonation Process

Yuto Makino, Yoshiki Saito, Hikaru Takehara, Akihiko Tsurui, Naoto Okuyama, Masaaki Ashida

Physica Status Solidi (A) Applications and Materials Science　Vol. 219　No. 22　2022/08　Research paper (scientific journal)

Imaging-based feedback cooling of a levitated nanoparticle

Y. Minowa, K. Kato, S. Ueno, T. W. Penny, A. Pontin, M. Ashida, P. F. Barker

Review of Scientific Instruments　Vol. 93　No. 7　p. 075109-075109　2022/07/01　Research paper (scientific journal)

Controllable Strongly Electron-Correlated Properties of NdNiO<inf>3</inf>Induced by Large-Area Protonation with Metal-Acid Treatment

Hui Ren, Ai Isohashi Osaka, Azusa N. Hattori, Boyuan Yu, Masaya Nagai, Masaaki Ashida, Bowen Li, Chongwen Zou, Hidekazu Tanaka

ACS Applied Electronic Materials　Vol. 4　No. 7　p. 3495-3502　2022/06/28　Research paper (scientific journal)

Formation and optical characteristics of GaN:Eu/GaN core-shell nanowires grown by organometallic vapor phase epitaxy

T. Otabara, J. Tatebayashi, S. Hasegawa, D. Timmerman, S. Ichikawa, M. Ichimiya, M. Ashida, Y. Fujiwara

Japanese Journal of Applied Physics　Vol. 61　No. SD　2022/06　Research paper (scientific journal)

Visualization of quantized vortex reconnection enabled by laser ablation.

Yosuke Minowa, Shota Aoyagi, Sosuke Inui, Tomo Nakagawa, Gamu Asaka, Makoto Tsubota, Masaaki Ashida

Science advances　Vol. 8　No. 18　2022/05/06　Research paper (scientific journal)

Optical trapping of silicon nanoparticles in superfluid helium

Yosuke Minowa, Yuki Yasui, Masaaki Ashida

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 12479　2022　Research paper (international conference proceedings)

In situ size measurement of a magnetically trapped single superconducting microparticle by Mie scattering

Masato Takamune, Shota Sasaki, Daisei Kondo, Jun Naoi, Mitsutaka Kumakura, Masaaki Ashida, Yoshiki Moriwaki

Applied Physics Express　Vol. 15　No. 1　2022/01　Research paper (scientific journal)

Optical trapping of nanoparticles in superfluid helium

Yosuke Minowa, Xi Geng, Keisuke Kokado, Kentaro Sato, Tatsuya Kameyama, Tsukasa Torimoto, Masaaki Ashida

Optica　Vol. 9　No. 1　p. 139-144　2022/01　Research paper (scientific journal)

Evaluation of the Oxygen Migration Energy in Doped Ceria by Terahertz Spectroscopy

Masaya Nagai, Yuto Furutani, Hikaru Takehara, Tomohide Morimoto, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

Physical Review Applied　Vol. 16　No. 6　2021/12　Research paper (scientific journal)

Enhanced Red Emission of Eu,O-Codoped GaN Embedded in a Photonic Crystal Nanocavity with Hexagonal Air Holes

Shuhei Ichikawa, Yutaka Sasaki, Takenori Iwaya, Masato Murakami, Masaaki Ashida, Dolf Timmerman, Jun Tatebayashi, Yasufumi Fujiwara

Physical Review Applied　Vol. 15　No. 3　2021/03　Research paper (scientific journal)

Enhanced Magneto-Optical Kerr Effect of GaAs-Based P-N Junctions in the Terahertz Range

Keita Miyagawa, Masaya Nagai, Masaaki Ashida, Changsu Kim, Hidefumi Akiyama

Journal of Infrared, Millimeter, and Terahertz Waves　Vol. 42　No. 3　p. 325-337　2021/02　Research paper (scientific journal)

Assessing the atomic structure of the defect complex in a solid electrolyte by photoluminescence measurements

Naoki Tanimoto, Masaya Nagai, Masaaki Ashida, Yuji Okuyama, Yukimune Kani

Japanese Journal of Applied Physics　Vol. 60　No. 3　p. 032004-032004　2021/02　Research paper (scientific journal)

Coherent detection of ultrabroadband infrared pulses using a single crystal of diamond

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

Applied Physics Express　Vol. 14　No. 3　p. 032005-032005　2021/02　Research paper (scientific journal)

Straightforward synthesis of silicon vacancy (SiV) center-containing single-digit nanometer nanodiamonds via detonation process

Yuto Makino, Tomoaki Mahiko, Ming Liu, Akihiko Tsurui, Taro Yoshikawa, Shinji Nagamachi, Shigeru Tanaka, Kazuyuki Hokamoto, Masaaki Ashida, Masanori Fujiwara, Norikazu Mizuochi, Masahiro Nishikawa

Diamond and Related Materials　Vol. 112　p. 108248-108248　2021/01　Research paper (scientific journal)

Generation of Ultrabroadband Coherent Infrared Pulses of the Frequency Range of 1-200 THz Using Multiplate-Compressed Driving Pulses

Eiichi Matsubara, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　Vol. 2020-　p. 88-89　2020/11/08　Research paper (international conference proceedings)

Gapless Sensitive Detection of Ultrabroadband Infrared Pulses Using Single Crystal of Diamond

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　Vol. 2020-　p. 183-184　2020/11/08　Research paper (international conference proceedings)

Direct Visualization and Determination of the Multiple Exciton Generation Rate.

Dolf Timmerman, Eiichi Matsubara, Leyre Gomez, Masaaki Ashida, Tom Gregorkiewicz, Yasufumi Fujiwara

ACS omega　Vol. 5　No. 34　p. 21506-21512　2020/09/01　Research paper (scientific journal)

Size dependence of quantum efficiency of red emission from GaN:Eu structures for application in micro-LEDs,

D. Denier, van, der Gon, D. Timmerman, Y. Matsude, S. Ichikawa, M. Ashida, P. Schall, Y. Fujiwara

Opt. Lett.　Vol. 45　No. 14　p. 3973-3976　2020/07　Research paper (scientific journal)

Carrier dynamics and excitation of e u3+ ions in GaN

Dolf Timmerman, Brandon Mitchell, Shuhei Ichikawa, Masaya Nagai, Masaaki Ashida, Yasufumi Fujiwara

Physical Review B　Vol. 101　No. 24　2020/06/15　Research paper (scientific journal)

Synthesis of submicron-sized CdS particles using reverse micelles

Yosuke Minowa, Shohei Kuramoto, Tatsuya Kameyama, Tsukasa Torimoto, Masaaki Ashida

Journal of Nanophotonics　Vol. 14　No. 2　p. 1-1　2020/04　Research paper (scientific journal)

Thermal free ultrafast luminescence due to nonlocal light-matter interaction (Conference Presentation)

Masayoshi Ichimiya, Takuya Matsuda, Hajime Ishihara, Masaaki Ashida

Ultrafast Phenomena and Nanophotonics XXIV　2020/03/10　Research paper (international conference proceedings)

Temperature dependences of photoluminescence intensities observed from AgInGaS and AgInGaS/GaSx core–shell nanoparticles

Masayoshi Ichimiya, Tatsuya Kameyama, Tsukasa Torimoto, Taro Uematsu, Susumu Kuwabata, Masaaki Ashida

Journal of Nanophotonics　Vol. 14　No. 01　p. 1-1　2020/03　Research paper (scientific journal)

Excitation Efficiency and Limitations of the Luminescence of Eu3+ Ions in Ga N

D. Timmerman, B. Mitchell, S. Ichikawa, J. Tatebayashi, M. Ashida, Y. Fujiwara

Physical Review Applied　Vol. 13　No. 1　2020/01/24　Research paper (scientific journal)

Quantum vortex visualization in superfluid helium

Yosuke Minowa, Kensuke Kokado, Shota Aoyagi, Masaaki Ashida

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 11522　2020　Research paper (international conference proceedings)

Time-Domain Magnetic Field-Difference Spectroscopy for Semiconductors Using Circularly Polarized Terahertz Pulses

Masaya Nagai, Atsushi Nakane, Hiroyasu Suzukawa, Tomohide Morimoto, Masaaki Ashida

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY　Vol. 10　No. 1　p. 51-57　2020/01　Research paper (scientific journal)

Optical manipulation of magnetically trapped superconducting micro particles in superfluid helium (Conference Presentation)

Masaaki Ashida, Jun Naoi, Masato Takamune, Yuta Takahashi, Shota Sasaki, Mitsutaka Kumakura, Yoshiuki Moriwaki

Optical Trapping and Optical Micromanipulation XVI　2019/09/09　Research paper (international conference proceedings)

Terahertz Proton Motions in Proton-Conducting Electrolyte of Solid Oxide Fuel Cell

H. Takehara, Yukimune Kani, Y. Okiuyama, Masaaki Ashida, Tomohide Morimoto, Masaya Nagai

2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)　2019/09/01

Terahertz time-domain magneto-optic spectroscopy without the polarization-resolution technique

Masaya Nagai, Atsushi Nakane, Hiroyasu Suzukawa, Tomohide Morimoto, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　Vol. 2019-　2019/09/01　Research paper (international conference proceedings)

Ultrafast thermal-free photoluminescence of coherently extended single quantum states

Takuya Matsuda, Masayoshi Ichimiya, Masaaki Ashida, Hajime Ishihara

Scientific Reports　Vol. 9　No. 1　p. 8453(1)-8453(8)　2019/06　Research paper (scientific journal)

Microscopic ion migration in solid electrolytes revealed by terahertz time-domain spectroscopy.

Tomohide Morimoto, Masaya Nagai, Yosuke Minowa, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani

Nature communications　Vol. 10　No. 1　p. 2662(1)-2662(8)　2019/06　Research paper (scientific journal)

Synergetic Enhancement of Light-Matter Interaction by Nonlocality and Band Degeneracy in ZnO Thin Films

Takashi Kinoshita, Takuya Matsuda, Takuya Takahashi, Masayoshi Ichimiya, Masaaki Ashida, Yoshiaki Furukawa, Masaaki Nakayama, Hajime Ishihara

Physical Review Letters　Vol. 122　No. 15　p. 157401(1)-157401(5)　2019/04　Research paper (scientific journal)

Magneto-THz spectroscopy by circularly polarized wave with magnetic field modulation

Nakane Atsushi, Suzukawa Hiroyasu, Morimoto Tomohide, Nagai Masaya, Ashida Masaaki

JSAP Annual Meetings Extended Abstracts　Vol. 2019.1　p. 897-897　2019/02/25

Special Section Guest Editorial: Optical Manipulation and Structured Materials

Takashige Omatsu, Masaaki Ashida, Yoshihiko Arita

Journal of Nanophotonics　Vol. 13　No. 01　p. 1-1　2019/02　Research paper (scientific journal)

Optical trapping in extreme conditions

Yosuke Minowa, Xi Geng, Kensuke Kokado, Masaaki Ashida

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 11141　2019　Research paper (international conference proceedings)

High-acquisition-rate single-shot pump-probe measurement using chirped-fiber Bragg gratings

Masataka Kobayashi, Yusuke Arashida, Genki Yamashita, Eiichi Matsubara, Masaaki Ashida, Jeremy A. Johnson, Ikufumi Katayama

2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)　2019　Research paper (international conference proceedings)

Lasing properties of semiconductor microspheres with high sphericity fabricated by laser ablation in superfluid helium

S. Okamoto, S. Ichikawa, Y. Minowa, M. Ashida

Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015　2019　Research paper (international conference proceedings)

Fast-frame single-shot pump-probe spectroscopy with chirped-fiber Bragg gratings

Masataka Kobayashi, Yusuke Arashida, Genki Yamashita, Eiichi Matsubara, Masaaki Ashida, Jeremy A. Johnson, Ikufumi Katayama

Optics Letters　Vol. 44　No. 1　p. 163-163　2019/01　Research paper (scientific journal)

Longitudinal Optical Phonons Modified by Organic Molecular Cation Motions in Organic-Inorganic Hybrid Perovskites

Masaya Nagai, Takuya Tomioka, Masaaki Ashida, Mizuki Hoyano, Ryo Akashi, Yasuhiro Yamada, Tomoko Aharen, Yoshihiko Kanemitsu

Physical Review Letters　Vol. 121　No. 14　2018/10　Research paper (scientific journal)

Efficient carrier multiplication in CsPbI3 perovskite nanocrystals

Chris de Weerd, Leyre Gomez, Antonio Capretti, Delphine M. Lebrun, Eiichi Matsubara, Junhao Lin, Masaaki Ashida, Frank C. M. Spoor, Laurens D. A. Siebbeles, Arjan J. Houtepen, Kazutomo Suenaga, Yasufumi Fujiwara, Tom Gregorkiewicz

Nature Communications　Vol. 9　No. 1　2018/10　Research paper (scientific journal)

Visualization of the internal field in the GaAs-based solar cell under its operating condition with Terahertz radiation

K. Miyagawa, M. Nagai, C. Kim, H. Akiyama, Y. Kanemitsu, M. Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　Vol. 2018-September　2018/10　Research paper (international conference proceedings)

Single-particle photoluminescence from cadmium selenide quantum dots fabricated via laser ablation in superfluid helium

Yosuke Minowa, Tatsuro Suzuki, Kenji Setoura, Syoji Ito, Hiroshi Miyasaka, Masaaki Ashida

Journal of Nanophotonics　Vol. 13　No. 1　2018/10　Research paper (scientific journal)

Quantitative monitoring of the internal field in the depletion layer of a GaAs-based solar cell with terahertz radiation

Keita Miyagawa, Masaya Nagai, Genki Yamashita, Masaaki Ashida, Changsu Kim, Hidefumi Akiyama, Yoshihiko Kanemitsu

APPLIED PHYSICS LETTERS　Vol. 113　No. 16　p. 163501-163501　2018/10　Research paper (scientific journal)

Efficient carrier multiplication in CsPbI3 perovskite nanocrystals

Chris de Weerd, Leyre Gomez, Antonio Capretti, Delphine M. Lebrun, Eiichi Matsubara, Junhao Lin, Masaaki Ashida, Frank C. M. Spoor, Laurens D. A. Siebbeles, Arjan J. Houtepen, Kazutomo Suenaga, Yasufumi Fujiwara, Tom Gregorkiewicz

NATURE COMMUNICATIONS　Vol. 9　2018/10　Research paper (scientific journal)

Longitudinal Optical Phonons Modified by Organic Molecular Cation Motions in Organic-Inorganic Hybrid Perovskites

Masaya Nagai, Takuya Tomioka, Masaaki Ashida, Mizuki Hoyano, Ryo Akashi, Yasuhiro Yamada, Tomoko Aharen, Yoshihiko Kanemitsu

Phys. Rev. Lett.　Vol. 121　No. 14　2018/10　Research paper (scientific journal)

Responsibility Of Plasma Current For The Generation Of The Highest Frequency Part Of Ultrabroadband Coherent Infrared Pulses With 200-THz Bandwidth

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2018/09　Research paper (international conference proceedings)

One-Dimensional Single Crystals of Lead Bromide Organic- Inorganic Hybrid Perovskites: Structure and Optical Properties

Huong Mai Duongthi, Shunpei Nobusue, Eiichi Matsubara, Masaaki Ashida, Hirokazu Tada

2018/09

Terahertz time-domain spectroscopy for organic-inorganic hybrid perovskite APbBr₃ (A=MA, FA, Cs)

冨岡拓也, 永井正也, 芦田昌明, 保屋野瑞希, 山田泰裕, 阿波連知子, 金光義彦

光物性研究会論文集　Vol. 29th　2018/09

電場印加ダイヤモンド単結晶による広帯域赤外波電場検出

松原 英一, 永井 正也, 芦田 昌明

2018/09

超流動ヘリウム下におけるプラズモン共鳴トラッピング

小門 慶祐, 蓑輪 陽介, 瀬戸浦 健仁, 伊都 将司, 宮坂 博, 石田 周太朗, 笹木 敬司, 芦田 昌明

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　Vol. 79th　2018/09

超流動ヘリウム中での光トラップと量子渦の可視化

蓑輪陽介, 耿溪, 芦田昌明

2018/09

Terahertz-induced desorption and ionization for the organic solids

M. NAGAI, E. MATSUBARA, M. ASHIDA, M. FUYUKI, K. KAWASE, A. IRIZAWA, G. ISOYAMA, J. AOKI, M. TOYODA

2018/06

Quantitative study of energy-transfer mechanism in Eu, O-codoped GaN by time-resolved photoluminescence spectroscopy

Tomohiro Inaba, Takanori Kojima, Genki Yamashita, Eiichi Matsubara, Brandon Mitchell, Reina Miyagawa, Osamu Eryu, Jun Tatebayashi, Masaaki Ashida, Yasufumi Fujiwara

JOURNAL OF APPLIED PHYSICS　Vol. 123　No. 16　2018/04　Research paper (scientific journal)

液体He中でレーザーアブレーションによって生成された超伝導微粒子の磁気トラップVI

高宗雅人, 高橋佑太, 直井惇, 中村吉成, 松島房和, 熊倉光孝, 芦田昌明, 森脇喜紀

2018/03

Appearance of exciton coherence in room temperature luminescence of high-quality thin films

Matsuda Takuya, Ichimiya Masayoshi, Ashida Masaaki, Ishihara Hajime

Meeting Abstracts of the Physical Society of Japan　Vol. 73　No. 0　p. 1504-1504　2018/03

Observation of radiative coupling between multi-component excitons by transient grating spectroscopy in ZnO thin films

Takahashi Takuya, Matsuda Takuya, Kinoshita Takashi, Ichimiya Masayoshi, Ishihara Hajime, Nakayama Masaaki, Ashida Masaaki

Meeting Abstracts of the Physical Society of Japan　Vol. 73　No. 0　p. 1503-1503　2018/03

単一テラヘルツ自由電子レーザーパルス励起によるZnO単結晶からの発光

孫星宇, 永井正也, 芦田昌明, 磯山悟朗

2018/03

空気プラズマからの超広帯域コヒーレント赤外波の発生メカニズム

松原 英一, 永井 正也, 芦田 昌明

2018/03

Luminescence of ZnO single crystal under the tunable intense terahertz pulse excitation

Xingyu Sun, Masaya Nagai, Masaaki Ashida, Goro Isoyama

2018/03

ZAIS量子ドットの光学的選別に向けた選択的光励起

守安 毅, 馬場 宥太, 小出 大士朗, 下村 昂之, 瀧山 貴之, 亀山 達矢, 鳥本 司, 芦田 昌明, 熊倉 光孝

2018/03

鉛ハライドペロブスカイト単結晶のテラヘルツ時間領域反射分光によるLOフォノンの決定

永井 正也, 冨岡 拓也, 芦田 昌明, 保屋野 瑞希, 明石 涼, 山田 泰裕, 阿波連

応用物理学会春季学術講演会講演予稿集(CD-ROM)　Vol. 65th　2018/03

Femtosecond radiative decay of coupled excitons by radiation-induced interaction in ZnO thin films

Masayoshi Ichimiya, Takuya Matsuda, Takashi Kinoshita, Masaaki Nakayama, Hajime Ishihara, Masaaki Ashida

Optics InfoBase Conference Papers　Vol. Part F125-OPJ 2018　2018　Research paper (international conference proceedings)

Property of magnetic trapping of superconducting sub-micron particles

J. Naoi, Y. Takahashi, M. Takamune, Y. Nakamura, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10712　2018　Research paper (international conference proceedings)

Picoseconds ion motions in materials for solid oxide fuel cell

Tomohide Morimoto, Masaya Nagai, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2018　Research paper (international conference proceedings)

Simple THz Faraday spectroscopic system using a phase shifter

Atsushi. Nakane, Tomohide. Morimoto, Masaya. Nagai, Masaaki. Ashida

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2018　Research paper (international conference proceedings)

Ultrafast optical response due to nonlocal interaction between light and excitons in ZnO thin films

Masayoshi Ichimiya, Takuya Matsuda, Takashi Kinoshita, Takuya Takahashi, Masaaki Nakayama, Hajime Ishihara, Masaaki Ashida

Optics InfoBase Conference Papers　Vol. 2018　2018　Research paper (international conference proceedings)

Simple THz Faraday spectroscopic system using a phase shifter

Atsushi. Nakane, Tomohide. Morimoto, Masaya. Nagai, Masaaki. Ashida

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　Vol. 2018-September　2018　Research paper (international conference proceedings)

Responsibility of plasma current for the generation of the highest frequency part of ultrabroadband coherent infrared pulses with 200-THz bandwidth

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　Vol. 2018-September　2018　Research paper (international conference proceedings)

Picoseconds ion motions in materials for solid oxide fuel cell

Tomohide Morimoto, Masaya Nagai, Masaaki Ashida, Yoichiro Yokotani, Yuji Okuyama, Yukimune Kani

2018 43RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　Vol. 2018-September　2018　Research paper (international conference proceedings)

Fabrication of cadmium selenide quantum dots with laser ablation in superfluid helium

Yosuke Minowa, Tatsuro Suzuki, Kenji Setoura, Syoji Ito, Hiroshi Miyasaka, Masaaki Ashida

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10712　2018　Research paper (international conference proceedings)

光圧による物質操作の新展開

芦田昌明

2018/01

1次元鉛ハライド系ペロブスカイトC6H9N2・PbI4の光学特性

田丸 隼也, 松田 拓也, 松原 英一, Thi-Mai Huong Duong, 信末 俊平, 夛田 博一, 芦田 昌明

2018/01

ZnO薄膜における光と励起子の空間的インタープレイによる超高速非線形光学応答の観測

高橋 拓也, 松田 拓也, 一宮 正義, 石原 一, 中山 正昭, 芦田 昌明

2018/01

ZnO薄膜における光を介した多成分励起子の混成効果による輻射緩和率増大の観測

高橋拓也, 松田拓也, 木下 岳, 一宮正義, 石原 一, 中山正昭, 芦田昌明

2017/12

Toward optical cooling of nanoparticles with optical trapping

二階堂新也, 蓑輪陽介, 芦田昌明

光物性研究会論文集　Vol. 28th　2017/12

Luminescence of ZnO excited by single terahertz free electron laser pulse

Xingyu Sun, Masaya Nagai, Masaaki Ashida, Goro IsoyamaA

2017/12

超流動ヘリウム中レーザーアブレーションによる半導体微粒子作製とそのダイナミクス

鈴木達朗, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集(CD-ROM)　Vol. 72　No. 1　2017/12

1次元ピリジン鉛ハライド系ペロブスカイト結晶の光学特性

田丸隼也, 松田拓也, 松原英一, Thi-Mai Huong Duong, 信末俊平, 夛田博一, 芦田昌明

2017/12

太陽電池の動作条件下におけるGaAsベース太陽電池からのテラヘルツ波放射

宮川敬太, 永井正也, 金昌秀A, 秋山英文A, 金光義彦B, 芦田昌明

2017/12

高品質半導体薄膜の室温発光スペクトルに表出する励起子コヒーレンスの実証

松田拓A, 一宮正義, 芦田昌明, 石原 一

2017/12

Extreme terahertz spectroscopy with highly intense and ultrabroadband sources

Masaaki Ashida, Eiichi Matsubara, Masaya Nagai

2017/11

Mechanism for intensity enhancement of ultrabroadband coherent infrared pulses from two-color excited air plasma

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2017/10/12　Research paper (international conference proceedings)

Structure dependence of the waveforms of THz radiation from GaAs-based photovoltaic devices

K. Miyagawa, G. Yamashita, M. Nagai, C. Kim, H. Akiyama, Y. Kanemitsu, M. Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2017/10/12　Research paper (international conference proceedings)

Excitation frequency dependence of the desorption of hydrogen-bonded solids using picosecond THz free electron laser pulses

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Masanori Fuyuki, Keigo Kawase, Akinori Irizawa, Goro Isoyama, Jun Aoki, Michisato Toyoda

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2017/10/12　Research paper (international conference proceedings)

Ultrafast terahjertz spectroscopy

Masaaki Ashida

2017/10

Optical fabrication and trapping of microspheres in cryogenic conditions

Masaaki Ashida, Yosuke Minowa, Mitsutaka Kumakura, Yoshiki Moriwaki

2017/10

液体He中でレーザーアブレーションによって生成された超伝導微粒子の磁気トラップIV

直井惇, 高橋佑太, 松島房和, 熊倉光孝, 芦田昌明, 森脇喜紀

2017/09

超流動ヘリウムにおける微粒子の光トラップ

耿溪, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集(CD-ROM)　Vol. 72　No. 2　2017/09

planar ion trap of microparticles

Minowa Yosuke, Ashida Masaaki

Meeting Abstracts of the Physical Society of Japan　Vol. 72　No. 0　p. 1266-1266　2017/09

Characterization of inner structure and optical properties of semiconductor microspheres

Tatemoto Akihiro

Meeting Abstracts of the Physical Society of Japan　Vol. 72　No. 0　p. 1235-1235　2017/09

Optical fabrication and trapping of superconducting nanoparticles in superfluid helium

Masaaki Ashida, Yosuke Minowa, Mitsutaka Kumakura, Yuta Takahashi, Fusakazu Matsushima, Yoshiki Moriwaki

2017/08　Research paper (international conference proceedings)

テラヘルツ分光でみる太陽電池材料・デバイスの光励起キャリアダイナミクス

山下元気, 松原英一, 永井正也, 芦田昌明

光アライアンス　Vol. 28　No. 8　p. 43-47　2017/08

In situ tuning of whispering gallery modes of levitated silica microspheres

Yosuke Minowa, Yusuke Toyota, Masaaki Ashida

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS　Vol. 34　No. 6　p. C20-C24　2017/06　Research paper (scientific journal)

Numerical study of terahertz quantum cascade lasers subjected to near-infrared optical pulse injection

Y. Sakasegawa, N. Sekine, S. Saito, M. Ashida, A. Kasamatsu, I. Hosako

JOURNAL OF COMPUTATIONAL ELECTRONICS　Vol. 16　No. 2　p. 382-391　2017/06　Research paper (scientific journal)

テラヘルツ時間領域分光法の広帯域化と物性研究への応用

松原英一, 永井正也, 芦田昌明

光アライアンス　Vol. 28　No. 6　2017/06

Fabrication of Superconducting Micro Particles by Laser Ablation in Superfluid Helium

Masaaki Ashida, Yosuke Minowa, Mitsutaka Kumakura, Yuta Takahashi, Fusakazu Matsushima, Yoshiki Moriwaki

2017/05　Research paper (international conference proceedings)

Inner structure of ZnO microspheres fabricated via laser ablation in superfluid helium

Yosuke Minowa, Yuya Oguni, Masaaki Ashida

OPTICS EXPRESS　Vol. 25　No. 9　p. 10449-10455　2017/05　Research paper (scientific journal)

Luminescence induced by electrons outside zinc oxide nanoparticles driven by intense terahertz pulse trains

Masaya Nagai, Shingo Aono, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Goro Isoyama

NEW JOURNAL OF PHYSICS　Vol. 19　2017/05　Research paper (scientific journal)

光電変換デバイスの時間分解テラヘルツ分光

永井正也, 山下元気, 松原英一, 芦田昌明

2017/05

波長板を用いたTHzホール測定

森本智英, 永井正也, 芦田昌明

2017/05

界面エネルギー移動を利用したナノ領域電子物性の新奇光プローブ法

服部 梓, 一宮 正義, 芦田 昌明, 田中 秀和

2017/03

非線形結晶の分散を取り入れた空気プラズマからの超広帯域コヒーレント赤外波スペクトルのシミュレーション

松原 英一, 永井 正也, 芦田 昌明

2017/03

高強度テラヘルツパルスによるZnOナノ微粒子からの特異な発光

青野 信吾, 永井 正也, 芦田 昌明, 入澤 明典, 川瀬 啓悟, 磯山 悟朗

2017/03

ピコ秒テラヘルツ自由電子レーザーが拓く有機固体のアブレーション

永井 正也, 松原 英一, 芦田 昌明, 冬木 正紀, 川瀬 啓悟, 入澤 明典, 磯山悟朗, 青木 順, 豊田 岐聡

2017/03

Fiber-Based Single-Shot Spectroscopy with Chirped Fiber Bragg Grating

Kobayashi Masataka, Johnson Jeremy, Arashida Yusuke, Minami Yasuo, Takeda Jun, Yamashita Genki, Ashida Masaaki, Katayama Ikufumi

JSAP Annual Meetings Extended Abstracts　Vol. 2017.1　p. 787-787　2017/03

液体He中でレーザーアブレーションによって生成された超伝導微粒子の磁気

高橋佑太, 直井惇, 山口滉太, 松島房和, 熊倉光孝, 芦田昌明, 森脇喜紀

2017/03

Temperature dependence of exciton photoluminescence of CuCl in nano-to-bulk crossover regime

Takahashi T., Matsuda T., Ichimiya M., Ishihara H., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 72　No. 0　p. 1539-1539　2017/03

超流動ヘリウム中レーザーアブレーションによる微粒子作製とそのダイナミクス

鈴木達朗, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集(CD-ROM)　Vol. 72　No. 1　2017/03

toward optical cooling of nanoparticles

Nikaiou S., Minowa Y., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 72　No. 0　p. 1594-1594　2017/03

Sensitive monitoring of photocarrier densities in the active layer of a photovoltaic device with time-resolved terahertz reflection spectroscopy

Genki Yamashita, Eiichi Matsubara, Masaya Nagai, Changsu Kim, Hidefumi Akiyama, Yoshihiko Kanemitsu, Masaaki Ashida

APPLIED PHYSICS LETTERS　Vol. 110　No. 7　2017/02　Research paper (scientific journal)

Magnetic trapping of superconducting submicron particles produced by laser ablation in superfluid helium

Yuta Takahashi, Junpei Suzuki, Naoya Yoneyama, Yurina Tokawa, Nobuaki Suzuki, Fusakazu Matsushima, Mitsutaka Kumakura, Masaaki Ashida, Yoshiki Moriwaki

APPLIED PHYSICS EXPRESS　Vol. 10　No. 2　2017/02　Research paper (scientific journal)

Property of Magnetic Trapping of Superconducting Sub-micron Particles

Y. Takahashi, J. Naoi, K. Yamaguchi, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki

OPTICAL MANIPULATION CONFERENCE　Vol. 10252　2017　Research paper (international conference proceedings)

Intensity and spectral changes in terahertz quantum cascade lasers induced by the injection of near-infrared optical pulses

Y. Sakasegawa, N. Sekine, S. Saito, A. Kasamatsu, I. Hosako, M. Ashida

2017/01　Research paper (international conference proceedings)

Fabrication of semiconductor microspheres with laser ablation in superfluid helium

Yosuke Minowa, Yuya Oguni, Masaaki Ashida

OPTICAL MANIPULATION CONFERENCE　Vol. 10252　No. 10252　2017　Research paper (international conference proceedings)

位相板を用いた円偏光THz時間領域分光法

森本智英, 山下元気, 永井 正也, 芦田 昌明

光アライアンス　Vol. 28　No. 1　p. 44-47　2017/01　Research paper (scientific journal)

Luminescence of ZnO excited by single intense picosecond terahertz pulse

Xingyu Sun, Masaya Nagai, Masaaki Ashida, Goro Isoyama

Optics InfoBase Conference Papers　Vol. Part F78-JSAP 2017　2017/01　Research paper (international conference proceedings)

Property of Magnetic Trapping of Superconducting Sub-micron Particles

Y. Takahashi, J. Naoi, K. Yamaguchi, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki

OPTICAL MANIPULATION CONFERENCE　Vol. 10252　2017　Research paper (international conference proceedings)

Fabrication of superconducting micro particles by laser ablation in superfluid helium

Masaaki Ashida, Yosuke Minowa, Mitsutaka Kumakura, Yuta Takahashi, Fusakazu Matsushima, Yoshiki Moriwaki

Optics InfoBase Conference Papers　Vol. 2017　p. 1-2　2017　Research paper (international conference proceedings)

Property of magnetic trapping of superconducting sub-micron particles

Y. Takahashi, J. Naoi, K. Yamaguchi, M. Kumakura, M. Ashida, F. Matsushima, Y. Moriwaki

Proceedings of SPIE - The International Society for Optical Engineering　Vol. 10252　2017　Research paper (international conference proceedings)

Multiexciton Lifetime in All-Inorganic CsPbBr3 Perovskite Nanocrystals

Elinore M. L. D. de Jong, Genki Yamashita, Leyre Gomez, Masaaki Ashida, Yasufumi Fujiwara, Tom Gregorkiewicz

JOURNAL OF PHYSICAL CHEMISTRY C　Vol. 121　No. 3　p. 1941-1947　2017/01　Research paper (scientific journal)

Time-resolved intensity and spectral changes in a wide-ridge terahertz quantum cascade laser by optical pulse injection

Yohei Sakasegawa, Shingo Saito, Norihiko Sekine, Akifumi Kasamatsu, Masaaki Ashida, Iwao Hosako

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 55　No. 10　p. 102701-102701-5　2016/10　Research paper (scientific journal)

THz pulse generation from doped GaAs depending on the concentration

Miyagawa Keita, Yamashita Genki, Nagai Masaya, Kim Changsu, Akiyama Hidehumi, Kanemitsu Yoshihiko, Ashida masaaki

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1372-1372　2016/09

Ultrafast photoluminescence dynamics from higher quantum levels in CuCl utilizing coherent exciton-light coupling scheme

Matsuda Takuya, Takahashi Takuya, Ichimiya Masayoshi, Ashida Masaaki, Ishihara Hajime

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1383-1383　2016/09

有機分子結晶の分子間振動を介したテラヘルツアブレーション

永井正也, 松原英一, 芦田昌明, 冬木正紀, 川瀬啓悟, 入澤明典, 磯山悟朗, 青木順, 豊田岐聡

2016/09

Ultrafast photoluminescence dynamics from higher quantum levels in CuCl utilizing coherent exciton-light coupling scheme

Matsuda Takuya, Takahashi Takuya, Ichimiya Masayoshi, Ashida Masaaki, Ishihara Hajime

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1383-1383　2016/09

Self-polarized terahertz magnon absorption in a single crystal of BiFeO3

Eiichi Matsubara, Takeshi Mochizuki, Masaya Nagai, Masaaki Ashida

PHYSICAL REVIEW B　Vol. 94　No. 5　2016/08　Research paper (scientific journal)

テラヘルツ時間領域分光法とその超広帯域化 －この十年の発展－

芦田昌明

2016/07

Effects of c/a Anisotropy and Local Crystal Structure on Superconductivity in AFe(2)(As1-xPx)(2) (A = Ba1-ySry, Sr1-yCay and Eu)

Toru Adachi, Yusuke Nakamatsu, Tatsuya Kobayashi, Shigeki Miyasaka, Setsuko Tajima, Masayoshi Ichimiya, Masaaki Ashida, Hajime Sagayama, Hironori Nakao, Reiji Kumai, Youichi Murakami

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 85　No. 6　p. 63705-1-4　2016/06　Research paper (scientific journal)

Correlative near-infrared light and cathodoluminescence microscopy using Y2O3:Ln, Yb (Ln = Tm, Er) nanophosphors for multiscale, multicolour bioimaging

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, T. Sannomiya, N. Tanaka, D. Onoshima, H. Yukawa, Y. Baba, M. Ashida, J. Miyake, T. Araki, M. Hashimoto

SCIENTIFIC REPORTS　Vol. 6　2016/05　Research paper (scientific journal)

新しいテラヘルツ電磁波応用に向けた超短光パルスとLiNbO3結晶によるテラヘルツ光源の開発

永井正也, 松原英一, 芦田昌明, 高柳 順, 大竹秀幸

2016/05

Synthesis of Y2O3 nanophosphors by homogeneous precipitation method using excessive urea for cathodoluminescence and upconversion luminescence bioimaging

Shoichiro Fukushima, Taichi Furukawa, Hirohiko Niioka, Masayoshi Ichimiya, Takumi Sannomiya, Jun Miyake, Masaaki Ashida, Tsutomu Araki, Mamoru Hashimoto

OPTICAL MATERIALS EXPRESS　Vol. 6　No. 3　p. 831-843　2016/03　Research paper (scientific journal)

Theory of Superfluorescence in Highly Inhomogeneous Quantum Systems

Akira Ishikawa, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh, Hajime Ishihara

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 85　No. 3　2016/03　Research paper (scientific journal)

Electrical transport properties of (La,Pr,Ca)MnO3 nanowires investigated using terahertz time domain spectroscopy

T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, M. Ashida, H. Tanaka

JOURNAL OF APPLIED PHYSICS　Vol. 119　No. 12　2016/03　Research paper (scientific journal)

21pBH-13 Development of ultrabroadband infrared tim-resolved spectroscopy system using air plasma

Matsubara E., Nagai M., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1548-1548　2016/03

21pPSA-20 Possibility of the effect of the coherent exciton{light coupling observable in the photoluminescence spectra with ZnO thin films

Matsuda T., Saeki S., Ichimiya M., Kinoshita T., Ishihara H., Kawakami M., Nakayama M., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1580-1580　2016/03

21pPSA-47 Improvement of Crystalline Quality in CuCl Thin Films Grown by MBE

Arai Y., Matsuda T., Nakamura K., Ichimiya M., Ishihara H., Ashida M., Yanagisawa J.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1606-1606　2016/03

22aBH-11 The competition between electron emission and impact ionization in ZnO nanocrystals using the picoseconds THz free electron laser

Aono S., Nagai M., Ashida M., Irizawa A., Kawase K., Isoyama G.

Meeting Abstracts of the Physical Society of Japan　Vol. 71　p. 1633-1633　2016/03

テラヘルツ分光によるGaAs太陽電池内部の光励起キャリア評価

山下 元気, 松原 英一, 永井 正也, 金 昌秀, 秋山 英文, 金光 義彦, 芦田 昌明

2016/03

円偏光THzパルスを用いた非接触ACホール測定

森本 智英, 山下 元気, 永井 正也, 芦田 昌明

2016/03

有機分子結晶のTHz-FELアブレーションの励起周波数依存性

永井 正也, 芦田 昌明, 川瀬 啓悟, 入澤 明典, 磯山 悟朗, 冬木 正紀, 青木 順, 豊田 岐聡

2016/03

光浮遊中微粒子の被接触内部温度測定手法の開発

蓑輪陽介, 豊田侑助, 二階堂新也, 芦田昌明

日本物理学会講演概要集(CD-ROM)　Vol. 71　No. 1　2016/03

Evaluation of complex conductivity in a circularly polarized field by terahertz time-domain reflection spectroscopy with a phase shifter

Tomohide Morimoto, Genki Yamashita, Masaya Nagai, Masaaki Ashida

APPLIED PHYSICS EXPRESS　Vol. 9　No. 2　2016/02　Research paper (scientific journal)

カソードルミネッセンス顕微鏡を用いた液中ナノバイオイメージング

古川 太一, 福島 昌一郎, 新岡 宏彦, 一宮 正義, 芦田 昌明, 三宅 淳, 橋本 守

2016/01　Research paper (other academic)

Detection Sensitivity of Electrooptic Sampling for Continuous-Wave Terahertz Sources throughout Broad Frequency Range

Yuta Kaneko, Mayu Kirigaya, Ikufumi Katayama, Isao Morohashi, Yoshihisa Irimajiri, Shingo Saito, Norihiko Sekine, Masaaki Ashida, Iwao Hosako

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

Impact of alkali doping on carrier transport in Cu2ZnSn(S,Se)(4) thin films for solar cell applications

L. Q. Phuong, J. K. Katahara, G. Yamashita, M. Nagai, M. Ashida, H. W. Hillhouse, Y. Kanemitsu

2016 IEEE 43RD PHOTOVOLTAIC SPECIALISTS CONFERENCE (PVSC)　p. 27-29　2016　Research paper (international conference proceedings)

Enhancement of Intensity of Ultrabroadband Coherent Infrared Pulses Generated from Air Plasma by Controlling Polarization of Driving Pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2016　Research paper (international conference proceedings)

THz-induced luminescence in ZnO nanocrystals with strong dependence on the excitation frequency

Masaya Nagai, Shingo Aono, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Goro Isoyama

2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2016　Research paper (international conference proceedings)

Enhancement of Intensity of Ultrabroadband Coherent Infrared Pulses Generated from Air Plasma by Controlling Polarization of Driving Pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2016　Research paper (international conference proceedings)

A smart method for magneto-optical spectroscopy with a quarter-wave plate

T. Morimoto, G. Yamashita, M. Nagai, M. Ashida

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

Anomalous luminescence of ZnO nanoparticles irradiated by the nonresonant intense THz pulses

Masaya Nagai, Shingo Aono, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Goro Isoyama

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

Quantitative evaluation of photocarriers in semiconductor p-i-n structures with time-resolved terahertz reflection spectroscopy

G. Yamashita, E. Matsubara, M. Nagai, C. Kim, H. Akiyama, Y. Kanemitsu, M. Ashida

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

Extension of the High Frequency Limit of Time Domain Spectroscopy up to 200 THz Using Two-color Pumped Air Plasma

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

Desorption via large-amplitude intermolecular vibration driven by the intense picosecond THz pulses

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Masanori Fuyuki, Keigo Kawase, Akinori Irizawa, Goro Isoyama, Jun Aoki, Michisato Toyoda

2016 41ST INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2016　Research paper (international conference proceedings)

THz-induced luminescence in ZnO nanocrystals with strong dependence on the excitation frequency

Masaya Nagai, Shingo Aono, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Goro Isoyama

2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2016　Research paper (international conference proceedings)

Enhancement of Intensity of Ultrabroadband Coherent Infrared Pulses Generated from Air Plasma by Controlling Polarization of Driving Pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2016　Research paper (international conference proceedings)

THz 円偏光伝導度計測が拓く新しい材料評価

永井正也, 森本智英, 山下元気, 芦田昌明

2015/10

Free-carrier dynamics and band tails in Cu2ZnSn(SxSe1-x)4: Evaluation of factors determining solar cell efficiency

Le Quang Phuong, Makoto Okano, Genki Yamashita, Masaya Nagai, Masaaki Ashida, Akira Nagaoka, Kenji Yoshino, Yoshihiko Kanemitsu

PHYSICAL REVIEW B　Vol. 92　No. 11　2015/09　Research paper (scientific journal)

Ultrafast near-infrared nonlinear absorption in a multiferroic single crystal of bismuth ferrite

Eiichi Matsubara, Takeshi Mochizuki, Masaya Nagai, Toshimitsu Ito, Masaaki Ashida

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 54　No. 9　p. 92201-92205　2015/09　Research paper (scientific journal)

Direct measurement of Fresnel coefficients for circular polarization in THz frequency region

T. Morimoto, G. Yamashita, M. Nagai, M. Ashida

2015/09

Wave plate composed of stacked parallel metal plates in THz frequency region

M. Nagai, Y. Takahashi, N. Mukai, Y. Minowa, M. Ashida, J. Takayanagi, H. Ohtake

2015/09

構造のある金属平行板導波路をベースとしたTHz波長板

永井正也, 高橋雄大, 向井紀之, 蓑輪陽介, 芦田昌明, 鈴木健仁, 高柳 順, 大竹秀幸

応用物理学会秋季学術講演会講演予稿集(CD-ROM)　Vol. 76th　2015/09

Photocarrier dynamics in perovskite CH3NH3PbI3 thin films revealed by time-resolved THz spectroscopy

L. Q. Phuong, G. Yamashita, M. Nagai, M. Ashida, N. Maruyama, T. Aharen

2015/09

Electrical transport properties in phase-separated manganite nanowires investigated using terahertz time domain spectroscopy

A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida, H. Tanaka

2015/09

Enhancement of Nonlinear Optical Signal Using Ultrashort-pulse Excitation in CuCl High-quality Thin Films

M. Ichimiya, S. Saeki, T. Umakoshi, T. Kinoshita, H. Ishihara, M. Ashida

2015/09

Recent progress on the generation of ultrabroadband coherent infrared pulses

E. Matsubara, M. Nagai, M. Ashida

2015/09

16aCF-8 Ablation dynamics of the organic crystals using the picoseconds THz free electron laser

Nagai M., Ashida M., Kawase K., Irizawa A., Kato R., Isoyama G., Fuyuki M., Aoki J., Toyoda M.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 1161-1161　2015/09

ZnOマイクロ微小球の低温における光学特性評価

小國友也, 杉本良平, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集(CD-ROM)　Vol. 70　No. 2　2015/09

19aBA-7 Superconductivity of fine particles produced by laser ablation II

Suzuki J., Takahashi Y., Enomoto K., Matsushima H., Kumakura M., Ashida M., Moriwaki Y.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 570-570　2015/09

Optical trapping of microdroplet containing a single nanomaterial in helium gas

Y. Minowa, R. Kawai, M. Ashida

2015/08

Identification of Giant Mott Phase Transition of Single Electric Nanodomain in Manganite Nanowall Wire

Azusa N. Hattori, Yasushi Fujiwara, Kohei Fujiwara, Thi Van Anh Nguyen, Takuro Nakamura, Masayoshi Ichimiya, Masaaki Ashida, Hidekazu Tanaka

NANO LETTERS　Vol. 15　No. 7　p. 4322-4328　2015/07　Research paper (scientific journal)

Ultrabroadband Terahertz Spectroscopy of Semiconductors

M. Ashida, M. Nagai, E. Matsubara

2015/07

Direct evaluation of reflection coefficients of circularly polarized light from THz time-domain spectroscopy

T. Morimoto, G. Yamashita, M. Nagai, M. Ashida

2015/07

Photocarrier dynamics in undoped and Na-doped Cu2ZnSnS4 single crystals revealed by ultrafast time-resolved terahertz spectroscopy

Le Quang Phuong, Makoto Okano, Genki Yamashita, Masaya Nagai, Masaaki Ashida, Akira Nagaoka, Kenji Yoshino, Yoshihiko Kanemitsu

APPLIED PHYSICS EXPRESS　Vol. 8　No. 6　2015/06　Research paper (scientific journal)

レーザによる半導体真球作製

M. Ashida

2015/06

Visualization of Extended-Drude Response of Photoexcited Carriers in InSb by Ultrabroadband Infrared Time-Domain Spectroscopy

E. Matsubara, T. Morimoto, M. Nagai, M. Ashida

2015/06

Lasing properties of semiconductor microspheres with high sphericity fabricated by laser ablation in superfluid helium

S. Okamoto, S. Ichikawa, Y. Minowa, M. Ashida

Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015　2015/06　Research paper (international conference proceedings)

高品質ZnO薄膜における超高速励起子輻射緩和

一宮正義, 佐伯 昴, 馬越隆之, 木下 岳, 石原 一, 川上将輝, 中山正昭, 芦田昌明

2015/05

Enhancement of Nonlinear Signal of Multinode-type Excitons Using Ultrashort-pulse Excitation in CuCl Thin Films

M. Ichimiya, T. Umakoshi, S. Saeki, T. Kinoshida, H. Ishihara, M. Ashida

2015/05

Ultrafast Optical Response Due to Coherent Coupling between Light and Exciton in Semiconductor Thin Films

M. Ichimiya, T. Umakoshi, S. Saeki, H. Ishihara, M. Ashida

2015/04

Optical trapping of a microdroplet containing a nanomaterial

Y. Minowa, R. Kawai, M. Ashida

2015/04

Lasing of single-crystalline microspheres with high sphericity fabricated by laser ablation

S. Okamoto, Y. Minowa, M. Ashida

2015/04

Pulse shaping of the intense few-cycle terahertz pulses for nonlinear spectroscopy

Masaya Nagai, Yutaka Kamon, Eiichi Matsubara, Yosuke Minowa, Masaaki Ashida

Proc. SPIE 9361, Ultrafast Phenomena and Nanophotonics XIX　2015/03　Research paper (international conference proceedings)

Optical levitation of a microdroplet containing a single quantum dot

Yosuke Minowa, Ryoichi Kawai, Masaaki Ashida

OPTICS LETTERS　Vol. 40　No. 6　p. 906-909　2015/03　Research paper (scientific journal)

Terahertz laminated-structure polarizer with high extinction ratio and transmission power

Yudai Kishi, Masaya Nagai, John C. Young, Keisuke Takano, Masanori Hangyo, Takehito Suzuki

APPLIED PHYSICS EXPRESS　Vol. 8　No. 3　2015/03　Research paper (scientific journal)

Non-thermal burst of organic powder using picosecond THz free electron laser pulses

M. Nagai, E. Matsubara, M. Ashida, K. Kawase, A. Irizawa, R. Kato, G. Isoyama

2015/03

Non-Drude response of dense photoinduced carriers in InSb revealed by ultrabroadband infrared time-resolved spectroscopy

E. Matsubara, T. Morimoto, M. Nagai, M. Ashida

2015/03

テラヘルツ量子カスケードレーザの水平横モードに対する光制御

酒瀬川洋平, 齋藤伸吾, 関根徳彦, 笠松章史, 芦田昌明, 寳迫 巌

2015/03

超広帯域赤外時間領域分光によるInSbにおける光誘起拡張ドルーデ応答

松原英一, 森本智英, 永井正也, 芦田昌明

2015/03

ZnO薄膜における光波－分極波長距離結合による超高速輻射緩和

一宮正義, 馬越隆之, 佐伯 昴, 木下 岳, 石原 一, 川上将輝, 中山正昭, 芦田 昌明

2015/03

Photocarrier dynamics in Cu2ZnSn(SxSe1-x)4 single crystals: Composition dependence

L. Q. Phuong, M. Okano, G. Yamashita, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, Y. Kanemitsu

2015/03

Suppression of nonradiative recombination centers in Cu2ZnSnS4 single crystals by sodium doping

L. Q. Phuong, M. Okano, G. Yamashita, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, Y. Kanemitsu

2015/03

近赤外発光・カソードルミネッセンスによるマルチスケール生体観察

福島昌一郎, 新岡宏彦, 一宮正義, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2015/03

21pCP-5 Observation of huge coherent coupling between light and confined excitons by ultrashort pulse excitation

Umakoshi T., Saeki S., Ichimiya M., Kinoshita T., Ishihara H., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 1472-1472　2015/03

固体酸素における反転対称性の破れの検証II

青山拓也, 永井正也, 三宅厚志, 吉森裕介, 平尾直久, 大石泰生, 清水克哉, 芦田昌明, 木村 剛

日本物理学会講演概要集　Vol. 70　p. 2714-2714　2015/03

22aCP-2 Photoexcited carrier dynamics in InSb observed with ultrabroadband infrared time-domain spectroscopy

Morimoto T., Matsubara E., Nagai M., Ashida M.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 1492-1492　2015/03

22pCN-6 The ablation of organic microcrystals by picosecond free electron laser

Nagai M., Matsubara E., Ashida M., Fuyuki M., Kawase K., Irizawa A., Kato R., Isoyama G.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 1507-1507　2015/03

AFe2(As1－xPx)2 (A=Ba1-ySry, Sr1-yCay)の電子相図および結晶構造とTCの関係

足立 徹, 小林達也, 宮坂茂樹, 田島節子, 一宮正義, 芦田昌明, 熊井玲児, 中尾裕則, 村上洋一

2015/03

Achromatic wave plate in THz frequency region based on parallel metal plate waveguides with a pillar array

Masaya Nagai, Noriyuki Mukai, Yosuke Minowa, Masaaki Ashida, Takehito Suzuki, Jun Takayanagi, Hideyuki Ohtake

OPTICS EXPRESS　Vol. 23　No. 4　p. 4641-4649　2015/02　Research paper (scientific journal)

23pBA-4 Relationship between structure anisotropy and T_c and phase diagram of AFe_2(As_<1-x>P_x)_2(A=Ba/Sr, Sr/Ca)

Adachi T., Kobayashi T., Miyasaka S., Tajima S., Ichimiya M., Ashida M., Kumai R., Nakao H., Murakami Y.

Meeting Abstracts of the Physical Society of Japan　Vol. 70　p. 2277-2277　2015

Multimodal Imaging Probing Platform Based on Upconverting Rare-Earth Doped Gd2O3 Nanocrystals

Doan Kim Dung T, Fukushima Shoichiro, Niioka Hirohiko, Ichimiya Masayoshi, Ashida Masaaki, Araki Tsutomu, Hashimoto Mamoru, Miyake Jun

Biophysical Journal　Vol. 108　No. 2　p. 171A-172A　2015

Extended-Drude Response of Photocarriers in InSb Revealed with Ultrabroadband Infrared Time-Domain Spectroscopy

Eiichi Matsubara, Tomohide Morimoto, Masaya Nagai, Masaaki Ashida

2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2015　Research paper (international conference proceedings)

Fabrication and lasing properties of single-crystalline semiconductor microspheres with anisotropic crystal structures

Shinya Okamoto, Satoshi Ichikawa, Yosuke Minowa, Masaaki Ashida

Materials Research Society Symposium Proceedings　Vol. 1736　p. 70-75　2015　Research paper (international conference proceedings)

Resonant Optical Kerr Response with Ultrashort Decay Time by Nonlocal Wave Coupling of Light and Excitons

Masayoshi Ichimiya, Takayuki Umakoshi, Hiroyuki Murata, Takashi Kinoshita, Hajime Ishihara, Masaaki Ashida

ULTRAFAST PHENOMENA XIX　Vol. 162　p. 348-351　2015　Research paper (international conference proceedings)

A novel analytical model for optical injection in terahertz quantum cascade lasers

Y. Sakasegawa, S. Saito, N. Sekine, A. Kasamatsu, M. Ashida, I. Hosako

Conference Digest - IEEE International Semiconductor Laser Conference　p. 179-180　2014/12/16　Research paper (international conference proceedings)

Intrinsic carrier multiplication efficiency in bulk Si crystals evaluated by optical-pump/terahertz-probe spectroscopy

G. Yamashita, E. Matsubara, M. Nagai, Y. Kanemitsu, M. Ashida

APPLIED PHYSICS LETTERS　Vol. 105　No. 23　2014/12　Research paper (scientific journal)

Ultrafast free-carrier dynamics in Cu2ZnSnS4 single crystals studied using femtosecond time-resolved optical spectroscopy

L. Q. Phuong, M. Okano, Y. Yamada, G. Yamashita, T. Morimoto, M. Nagai, M. Ashida, A. Nagaoka, K. Yoshino, Y. Kanemitsu

APPLIED PHYSICS LETTERS　Vol. 105　No. 23　p. 231902-1-4　2014/12　Research paper (scientific journal)

Y2O3:Tm,Yb nanophosphors for correlative upconversion luminescence and cathodoluminescence imaging

Shoichiro Fukushima, Taichi Furukawa, Hirohiko Niioka, Masayoshi Ichimiya, Jun Miyake, Masaaki Ashida, Tsutomu Araki, Mamoru Hashimoto

MICRON　Vol. 67　p. 90-95　2014/12　Research paper (scientific journal)

CuCl薄膜における励起子輻射緩和の超短パルス励起効果

馬越隆之, 佐伯 昴, 一宮正義, 石原 一, 芦田昌明

2014/12

直線・円偏光高強度THzパルスを用いた高温超伝導体の非線形分光

藤井一平, 永井正也, 松原英一, 芦田昌明

2014/12

ZnO薄膜における光－励起子結合効果による超高速非線形応答の観測

佐伯 昴, 馬越隆之, 一宮正義, 木下 岳, 石原 一, 川上将輝, 中山正昭, 芦田昌明

2014/12

単一量子ドットCdSe/ZnS-液滴系の光トラッピング

川井諒一, 蓑輪陽介, 芦田昌明

光物性研究会論文集　Vol. 25th　2014/12

n型Geのドナー準位間遷移における非線形光学応答の励起パルスのキャリアエンベロープ依存性

掃部 豊, 永井正也, 芦田昌明

2014/12

ナノからバルクへのクロスオーバー領域における光学応答の巨大化

芦田昌明

2014/10

近赤外光・電子顕微鏡による相関バイオイメージング

福島昌一郎, 新岡宏彦, 一宮正義, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2014/10

Free carrier dynamics in Cu₂ZnSnS₄ single crystals investigated by optical pump - THz probe spectroscopy

Quang Phuong Le, Makoto Okano, Genki Yamashita, Tomohide Morimoto, Yasuhiro Yamada, Akira Nagaoka, Kenji Yoshino, Masaya Nagai, Masaaki Ashida, Yoshihiko Kanemitsu

JSAP Annual Meetings Extended Abstracts　Vol. 2014.2　p. 3056-3056　2014/09/01

高強度円偏光THzパルスを用いた高温超伝導体の非線形分光

藤井一平, 永井正也, 松原英一, 芦田昌明

2014/09

単一量子ドット 液滴系の光トラッピング

川井諒一, 蓑輪陽介, 芦田昌明

光物性研究会論文集　Vol. 25th　2014/09

レーザーアブレーションにより生成した微粒子の超伝導性

鈴木淳平, 屼ノ下陽哉, 米山直弥, 榎本勝成, 松島房和, 熊倉光孝, 芦田昌明, 森脇喜紀

2014/09

光トラップ中での微小球共振器の溶融

豊田侑助, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集　Vol. 69　No. 2　2014/09

CuCl薄膜における光 励起子長距離結合効果による超高速・高効率光カー応答

佐伯 昴, 馬越隆之, 村田寛幸, 一宮正義, 芦田昌明

2014/09

InSbにおける光励起広帯域テラヘルツ時間領域分光

森本智英, 山下元気, 永井正也, 松原英一, 芦田昌明

2014/09

共振器端面プラズマによるテラヘルツ量子カスケードレーザの強度変調

酒瀬川洋平, 齋藤伸吾, 関根徳彦, 笠松章史, 芦田昌明, 寳迫 巌

2014/09

Tens nanometer scale cathodoluminescence bioimaging with rare-earth doped nanophosphors

S. Fukushima, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2014/09

Multimodal bioimaging probes based on lanthanide doped Gd2O3 nanophosphors

K. D. Doan, S. Fukushima, H. Niioka, J. Miyake, M. Ichimiya, M. Ashida, T. Araki, M. Hashimoto

2014/09

空気プラズマからの超広帯域コヒーレント赤外波をもちいた単結晶シリコンの時間分解ポンププローブ分光

松原英一, 永井正也, 芦田昌明

2014/09

ZnO薄膜における光ー励起子コヒーレント結合の観測

馬越隆之, 佐伯 昴, 一宮正義, 木下 岳, 石原 一, 川上将輝, 中山正昭, 芦田昌明

2014/09

THz時間分解分光によるナノ相分離(La,Pr,Ca)MnO3の伝導ダイナミクス解明

服部 梓, Anh Nguyen, 永井正也, 中村拓郎, 藤原宏平, 芦田昌明, 田中秀和

2014/09

Capture of a terahertz wave in a photonic-crystal slab

Ryoma Kakimi, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

NATURE PHOTONICS　Vol. 8　No. 8　p. 657-663　2014/08　Research paper (scientific journal)

Estimation of dc transport dynamics in strongly correlated (La,Pr,Ca)MnO3 film using an insulator-metal composite model for terahertz conductivity

T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida, H. Tanaka

APPLIED PHYSICS LETTERS　Vol. 105　No. 2　2014/07　Research paper (scientific journal)

Generation and Detection of THz Pulses With a Bandwidth Extending Beyond 4 THz Using a Subpicosecond Yb-Doped Fiber Laser System

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Jun Takayanagi, Hideyuki Ohtake

IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY　Vol. 4　No. 4　p. 440-446　2014/07　Research paper (scientific journal)

近赤外・カソードルミネッセンス相関観察を目指したナノ蛍光体粒子の開発

福島昌一郎, 新岡宏彦, 一宮正義, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2014/07

Broadband terahertz generation approaching optical communication frequency using tilted DAST crystals

I. Katayama, M. Bito, E. Matsubara, M. Ashida

2014/06　Research paper (international conference proceedings)

Fabrication of single-crystalline microspheres with high sphericity from anisotropic materials

Shinya Okamoto, Kazuhiro Inaba, Takuya Iida, Hajime Ishihara, Satoshi Ichikawa, Masaaki Ashida

SCIENTIFIC REPORTS　Vol. 4　2014/06　Research paper (scientific journal)

Optical manipulation of quantum dots in superfluid He

Y. Minowa, H. Tahara, M. Ashida

2014/04

Investigation of effective carrier characteristics in strongly correlated (La,Pr,Ca)MnO3 films by the THz Time Domain Spectroscopy

T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida, H. Tanaka

2014/03

カソードルミネッセンス顕微鏡と光学顕微鏡の融合

新岡宏彦, 古川太一, 福島昌一郎, 一宮正義, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2014/03

Synthesis of nanophosphors for correlative cathodoluminescence, up-conversion, and near-infrared bioimaging

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2014/03

希土類ナノ蛍光体を用いたマルチカラーカソードルミネッセンス・アップコンバージョン生体観察

福島昌一郎, 古川太一, 新岡宏彦, 一宮正義, 芦田昌明, 三宅 淳, 荒木 勉, 橋本 守

2014/03

28aCK-1 Conductive properties through the metal insulator transition in the strongly correlated (La,Pr,Ca)MnO_3 film investigated by the THz Time Domain Spectroscopy

Nguyen T. V. A., Hattori A. N., Nagai M., Nakamura T., Fujiwara K., Ashida M., Tanaka H.

Meeting abstracts of the Physical Society of Japan　Vol. 69　No. 1　p. 746-746　2014/03

光励起による金属薄膜におけるドルーデ減衰の変化

蓑輪陽介, 永井正也, 芦田昌明

日本物理学会講演概要集　Vol. 69　No. 1　2014/03

高強度ピコ秒THz自由電子レーザーによるレーザーアブレーション

永井正也, 芦田昌明, 川瀬啓悟, 入澤明典, 加藤龍好, 磯山悟朗

2014/03

超流動ヘリウム下におけるCdSe量子ドットの光マニピュレーション

田原英明, 蓑輪陽介, 岡本慎也, 芦田昌明

日本物理学会講演概要集　Vol. 69　No. 1　2014/03

固体酸素における反転対称性の破れの検証

青山拓也, 永井正也, 三宅厚志, 清水克哉, 芦田昌明, 木村 剛

2014/03

テラヘルツ分光によるシリコン単結晶における紫外光励起キャリアの時空間ダイナミクス

山下元気, 松原英一, 永井正也, 金光義彦, 芦田昌明

2014/03

BiFeO3大型単結晶における超高速過渡光学応答

望月岳志, 松原英一, 永井正也, 伊藤利允, 芦田昌明

2014/03

Y2O3-based nanophosphors for multi-colored cathodoluminescence and up-conversion luminescence bioimaging

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2014/02

Visible to near-infrared luminescent nanoparticles for multimodal bioimaging on nanometer to millimeter scale

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2014/02

Investigation of effective carrier characteristics in strongly correlated (La,Pr,Ca)MnO3 films by the THz Time Domain Spectroscopy

T. V. A. Nguyen, A. N. Hattori, M. Nagai, T. Nakamura, K. Fujiwara, M. Ashida, H. Tanaka

2014/02

The Control of Superconductivity by K and P Doping in SrFe2As2

T. Adachi, T. Kobayashi, S. Miyasaka, S. Tajima, M. Ashida, M. Ichimiya

2014/02

Photoinduced absorption with ultrafast decay constants in a large single crystal of BiFeO3

Takeshi Mochizuki, Eiichi Matsubara, Masaya Nagai, Toshimitsu Ito, Masaaki Ashida

Optics InfoBase Conference Papers　2014　Research paper (international conference proceedings)

Photoinduced absorption with ultrafast decay constants in a large single crystal of BiFeO3

Takeshi Mochizuki, Eiichi Matsubara, Masaya Nagai, Toshimitsu Ito, Masaaki Ashida

Optics InfoBase Conference Papers　2014　Research paper (international conference proceedings)

Ultrabroadband coherent infrared spectroscopy using air-plasma based generation and detection

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

Optics InfoBase Conference Papers　2014　Research paper (international conference proceedings)

Optical Transportation of Semiconductor Nanoparticles

MINOWA Yosuke, ASHIDA Masaaki

The Review of Laser Engineering　Vol. 42　No. 10　p. 771-771　2014

Broadband terahertz spectroscopy of thin films

Ikufumui Katayama, Masaaki Ashida

Springer Series in Optical Sciences　Vol. 180　p. 167-184　2014　Research paper (scientific journal)

Optical fabrication of semiconductor single-crystalline microspheres in superfluid helium

Shinya Okamoto, Satoshi Ichikawa, Yosuke Minowa, Masaaki Ashida

Materials Research Society Symposium Proceedings　Vol. 1635　2014　Research paper (international conference proceedings)

Ultra-broadband IR and THz generation and detection with ultrashort pulses

Masaaki Ashida, Eiichi Matsubara, Ikufumi Katayama

NONLINEAR FREQUENCY GENERATION AND CONVERSION: MATERIALS, DEVICES, AND APPLICATIONS XIII　Vol. 8964　2014　Research paper (international conference proceedings)

A novel analytical model for optical injection in terahertz quantum cascade lasers

Y. Sakasegawa, S. Saito, N. Sekine, A. Kasamatsu, M. Ashida, I. Hosako

2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014)　p. 179-180　2014　Research paper (international conference proceedings)

Sub-terahertz Frequency Detection Using Sub-5 fs Laser Pulses and a Photoconductive Antenna

Ikufumi Katayama, Yu Chiba, Isao Morohashi, Yoshihisa Irimajiri, Norihiko Sekine, Iwao Hosako, Masaaki Ashida

2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2014　Research paper (international conference proceedings)

Carrier multiplication in bulk silicon investigated by terahertz spectroscopy

G. Yamashita, E. Matsubara, M. Nagai, Y. Kanemitsu, M. Ashida

2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2014　Research paper (international conference proceedings)

Ablation of organic crystals using picosecond THz free electron laser pulses

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Keigo Kawase, Akinori Irizawa, Ryukou Kato, Goro Isoyama

2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2014　Research paper (international conference proceedings)

Achromatic THz wave plate composed of stacked parallel metal plates with a pillar array

Noriyuki Mukai, Masaya Nagai, Yosuke Minowa, Masaaki Ashida, Jun Takayanagi, Hideyuki Ohtake

2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2014　Research paper (international conference proceedings)

THz time-domain spectroscopy beyond 4 THz using a sub-picosecond Yb-doped fiber laser system

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida, Jun Takayanagi, Hideyuki Ohtake

2014 39TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2014　Research paper (international conference proceedings)

Ultrafast Resonant Optical Kerr Response due to Long-Range Coherent Coupling of Light and Multinode-Type Excitons

M. Ichimiya, H. Murata, T. Umakoshi, T. Kinoshita, H. Ishihara, M. Ashida

2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2014　Research paper (international conference proceedings)

Broadband Terahertz Generation Approaching Optical Communication Frequency Using Tilted DAST Crystals

Ikufumi Katayama, Michitaka Bito, Eiichi Matsubara, Masaaki Ashida

2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2014　Research paper (international conference proceedings)

Ultrabroadband Coherent Infrared Spectroscopy Using Air-Plasma Based Generation and Detection

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2014　Research paper (international conference proceedings)

Photoinduced Absorption with Ultrafast Decay Constants in a Large Single Crystal of BiFeO3

Takeshi Mochizuki, Eiichi Matsubara, Masaya Nagai, Toshimitsu Ito, Masaaki Ashida

2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2014　Research paper (international conference proceedings)

Achromatic THz wave plate composed of stacked parallel metal plates

Masaya Nagai, Noriyuki Mukai, Yosuke Minowa, Masaaki Ashida, Jun Takayanagi, Hideyuki Ohtake

OPTICS LETTERS　Vol. 39　No. 1　p. 146-149　2014/01　Research paper (scientific journal)

Intermolecular THz Vibrations Relevant to Optically and Thermally Induced Magnetic Phase Transitions in the Strongly Correlated Organic Radical TTTA

Taro Kawano, Ikufumi Katayama, Jun Ohara, Masaaki Ashida, Jun Takeda

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 83　No. 1　p. 014713-1-6　2014/01　Research paper (scientific journal)

Cathodoluminescence and up-conversion fluorescence bioimaging with rare-earth doped nanophosphors

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2013/12

超流動ヘリウム下におけるCdSe/ZnS量子ドットの光マニピュレーション

田原英明, 蓑輪陽介, 岡本慎也, 芦田昌明

光物性研究会論文集　Vol. 24th　2013/12

BiFeO3大型単結晶の近赤外と紫外励起によるポンププローブ分光

望月岳志, 松原英一, 永井正也, 伊藤利充, 芦田昌明

2013/12

高品質CuClの薄膜における光カー効果による超高速応答の観測

村田寛幸, 馬越隆之, 一宮正義, 芦田昌明

2013/12

波形整形したテラヘルツパルスを用いたGeのアクセプター準位間遷移のコヒーレント応答

掃部 豊, 永井正也, 蓑輪陽介, 松原英一, 芦田昌明

光物性研究会論文集　Vol. 24th　2013/12

光ポンプ・テラヘルツプローブ分光によるバルクSiにおける光励起キャリア生成効率の評価

山下元気, 松原英一, 永井正也, 金光義彦, 芦田昌明

2013/12

Rare-earth doped Y2O3 nanophosphors for biological cathodoluminescence imaging

H. Niioka, T. Furukawa, S. Fukushima, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2013/12

構造のある金属平板を用いたTHzアクロマート波長板

向井紀之, 永井正也, 蓑輪陽介, 芦田昌明, 高柳 順, 大竹秀幸

光物性研究会論文集　Vol. 24th　2013/12

High-resolution microscopy for biological specimens via cathodoluminescence of Eu- and Zn-doped Y2O3 nanophosphors

Taichi Furukawa, Hirohiko Niioka, Masayoshi Ichimiya, Tomohiro Nagata, Masaaki Ashida, Tsutomu Araki, Mamoru Hashimoto

Optics Express　Vol. 21　No. 22　p. 25655-25663　2013/11/04　Research paper (international conference proceedings)

Upconversion fluorescence and CL imaging for multiscale biological imaging

H. Niioka, T. Furukawa, S. Fukushima, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2013/11

Bimodal biological observation with luminescence emitted under electron beam and near-infrared light irradiation

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2013/11

C212 Synthesis of bimodal nanophosphors with cathodoluminescence and upconversion luminescence for multi-scale bioimaging

Shoichiro FUKUSHIMA, Taichi FURUKAWA, Hirohiko NIIOKA

The Proceedings of the JSME Conference on Frontiers in Bioengineering　Vol. 2013.24　No. 0　p. 181-182　2013/11　Research paper (scientific journal)

カソードルミネッセンス顕微鏡を用いた細胞のナノ・イメージング

古川太一, 新岡宏彦, 福島昌一郎, 一宮正義, 市川 聡, 永田智啓, 芦田昌明, 三宅 淳, 荒木 勉, 橋本 守

2013/11

電子線及び近赤外光照射による発光を用いたバイモーダル生体観察

福島昌一郎, 古川太一, 新岡宏彦, 一宮正義, 芦田昌明, 三宅 淳, 荒木 勉, 橋本 守

2013/11

半導体ナノ粒子の量子選択的光輸送

芦田昌明

2013/11

Upconversion Nanophosphors for Correlative CL and Fluorescent Imaging

Niioka Hirohiko, Furukawa Taichi, Fukushima Syoichiro, Ichimiya Masayoshi, Nagata Tomohiro, Miyake Jun, Ashida Masaaki, Araki Tsutomu, Hashimoto Mamoru

Seibutsu Butsuri　Vol. 53　No. 1　2013/10

Influence of ultra-short- infrared optical pulse injection into terahertz laser

Y. Sakasegawa, N. Sekine, S. Saito, M. Ashida, I. Hosako

2013/10

マルチスケール相関生体イメージングを実現するバイモーダルナノ蛍光体の合成

福島昌一郎, 古川太一, 新岡宏彦, 一宮正義, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2013/10

Towards multicolor correlative light and cathodoluminescence imaging with using upconversion nanophosphors

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

2013/09　Research paper (international conference proceedings)

Extreme Optical Responses by Precise Control in Thin Film Fabrication ofⅠ -VII Compounds

M. Ichimiya, M. Ashida, H. Ishihara

Journal of smart processing　Vol. 2　No. 5　p. 245-250　2013/09　Research paper (scientific journal)

近赤外光パルスによるテラヘルツ量子カスケードレーザの強度変調 II

酒瀬川洋平, 齋藤伸吾, 関根徳彦, 芦田昌明, 寳迫 巌

2013/09

BiFeO3大型単結晶のテラヘルツ分光

望月岳志, 松原英一, 永井正也, 伊藤利充, 芦田昌明

2013/09

量子閉じ込め励起子の波動共鳴による超高速光カー応答

一宮正義, 木下 岳, 石原 一, 芦田昌明

2013/09

半導体ナノ粒子の量子選択的光輸送

芦田昌明

2013/09

空気中における半導体量子ドットの光トラッピング

川井諒一, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集　Vol. 68　No. 2　2013/09

数サイクルテラヘルツパルスを用いたYBCO薄膜のTHz非線形応答

藤井一平, 松原英一, 永井正也, 芦田昌明

2013/09

波形整形したテラヘルツパルスを用いたGeの不純物準位間遷移のコヒーレント応答

掃部 豊, 永井正也, 蓑輪陽介, 松原英一, 芦田昌明

日本物理学会講演概要集　Vol. 68　No. 2　2013/09

構造のある金属平板を用いたTHzアクロマート波長板

向井紀之, 永井正也, 蓑輪陽介, 芦田昌明, 高柳 順, 大竹秀幸

光物性研究会論文集　Vol. 24th　2013/09

YBCO薄膜のTHz非線形応答のCEP依存性

永井正也, 松原英一, 芦田昌明

2013/09

Optical fabrication and manipulation of semiconductor nanoparticles in superfluid helium

Y. Minowa, Y. Nawaki, S. Okamoto, M. Ashida

2013/08

Generation and Detection of Ultrabroadb and Coherent Infrared Pulses with Frequencies up to 200 THz Using Air Plasma and 10 fs Pulses

E. Matsubara, M. Nagai, M. Ashida

2013/07　Research paper (other academic)

Near-infrared pulse induced modulation of quantum cascade lasers

Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida, I. Hosako

2013/07　Research paper (international conference proceedings)

Electric field detection of phase-locked near-infrared pulses using photoconductive antenna

I. Katayama, R. Akai, M. Bito, E. Matsubara, M. Ashida

OPTICS EXPRESS　Vol. 21　No. 14　p. 16248-16254　2013/07　Research paper (scientific journal)

カソードルミネッセンス顕微鏡を用いたバイオイメージング

古川太一, 新岡宏彦, 福島昌一郎, 一宮正義, 市川 聡, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2013/07

Coherent transitions between the shallow acceptor levels in germanium using intense THz pulses

Masaya Nagai, Yutaka Kamon, Yosuke Minowa, Eiichi Matsubara, Masaaki Ashida

New Journal of Physics　Vol. 15　2013/06　Research paper (scientific journal)

Coherent infrared spectroscopy system from terahertz to near infrared using air plasma produced by 10-fs pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS　Vol. 30　No. 6　p. 1627-1630　2013/06　Research paper (scientific journal)

高品質CuCl 薄膜における超高速光カー応答

一宮正義, 神薗建太, 木下 岳, 岡本尚也, 石原 一, 芦田昌明

2013/06

Near-infrared femtosecond-pulse injection in terahertz quantum cascade lasers

Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida, I. Hosako

2013/04　Research paper (other academic)

Ultrabroadband coherent infrared pulse with a spectral range up to 200 THz using air for both generation and detection

E. Matsubara, M. Nagai, M. Ashida

2013/04

Modulation of the carrier envelop phase for monocycle THz pulses using parallel metal plates

M. Nagai, Y. Minowa, M. Ashida

2013/04

Assessment of the generation efficiency of photoexcited carriers in Si film using optical pump-THz probe spectroscopy

G. Yamashita, M. Yoshii, E. Matsubara, M. Nagai, Y. Kanemitsu, M. Ashida

2013/04

Synthesis of Rare-earth Doped Nano Phosphors for Biological Cathodoluminescence Imaging

T. Furukawa, H. Niioka, M. Ichimiya, S. Ichikawa, T. Nagata, J. Miyake, M. Ashida, T. Araki, M. Hashimoto

Focus on Microscopy 2013 (Maastricht, The Netherlands) (Poster)　2013/03

Synthesis of rare-earth doped up-conversion and cathodoluminescence nanophosphors for correlative bioimaging

S. Fukushima, T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, J. Miyake, M. Ashida, M. Hashimoto, T. Araki

2013/03

CuCl薄膜における弱閉じ込め励起子の光カー効果

神薗建太, 一宮正義, 岡本尚也, 石原 一, 芦田昌明

2013/03

半導体ナノ粒子の選択的光輸送

芦田昌明

2013/03

光ポンプ・テラヘルツプローブ分光によるSiにおける光励起キャリア生成効率の評価

山下元気, 吉井正浩, 松原英一, 永井正也, 金光義彦, 芦田昌明

2013/03

水熱合成法によるシリコン系ナノ粒子の作製とその発光特性

荒正人, 山神光平, 一宮正義, 芦田昌明, 夛田博一

2013/03

カソードルミネッセンス生体イメージングのための微小希土類添加ナノ蛍光体作製

古川太一, 新岡宏彦, 一宮正義, 市川 聡, 永田智啓, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2013/03

THzパルスのキャリアエンベロップ位相の変調と非線形分光への展開

永井正也, 掃部 豊, 大西洋平, 蓑輪陽介, 松原英一, 芦田昌明

日本物理学会講演概要集　Vol. 68　No. 1　2013/03

CuCl薄膜における光-励起子結合の増強による励起子輻射緩和の高速化

神薗建太, 一宮正義, 村田寛幸, 石原 一, 芦田昌明

2013/03

高密度CuCl量子ドット集合系における励起子分子超蛍光パルスの発生機構

池田圭吾, 石川陽, 石原 一, 芦田昌明, 宮島顕祐

2013/03

円偏光軟X線共鳴回折を用いたDyFe3(BO3)4における構造カイラリティの観察

薄井智靖, 田中良和, 永井正也, 芦田昌明, 若林裕助, 木村 剛

2013/03

アップコンバージョン発光とカソードルミネッセンスによる生体観察を目指した希土類ナノ蛍光体プローブの作製

福島昌一郎, 古川太一, 新岡宏彦, 一宮正義, 永田智啓, 三宅 淳, 芦田昌明, 荒木 勉, 橋本 守

2013/03

金属平行平板を用いたモノサイクルTHz パルスの位相制御

永井正也, 蓑輪陽介, 芦田昌明

応用物理学会春季学術講演会講演予稿集(CD-ROM)　Vol. 60th　2013/03

フォトニック結晶スラブを用いたテラヘルツ波吸収体

垣見亮磨, 冨士田誠之, 永井正也, 芦田昌明, 永妻忠夫

2013/03

Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation

Masayoshi Ichimiya, Le Quang Phuong, Masaaki Ashida, Tadashi Itoh

Journal of Crystal Growth　Vol. 378　p. 372-375　2013　Research paper (scientific journal)

Achromatic THz wave plate based on the structured parallel metal plates

Noriyuki Mukai, Masaya Nagai, Yosuke Minowa, Masaaki Ashida

2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2013　Research paper (international conference proceedings)

Optical Kerr effect of confined excitons coherently coupled with radiation wave

Masayoshi Ichimiya, Kenta Kamizono, Naoya Okamoto, Hajime Ishihara, Masaaki Ashida

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013　Research paper (international conference proceedings)

Terahertz-Wave Absorbers Using a Photonic Crystal Slab

Ryoma Kakimi, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR)　2013　Research paper (international conference proceedings)

Coherent transitions in doped-germanium using intense few-cycle THz pulses

Masaya Nagai, Yutaka Kamon, Yosuke Minowa, Eiichi Matsubara, Masaaki Ashida

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013　Research paper (international conference proceedings)

Phase-sensitive THz nonlinear spectroscopy in high-T-c superconductor thin film

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2013　Research paper (international conference proceedings)

Quantitative evaluation of the photoexcited carriers in bulk Si using optical pump-THz probe spectroscopy

Genki Yamashita, Eiichi Matsubara, Masaya Nagai, Yoshihiko Kanemitsu, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2013　Research paper (international conference proceedings)

Coherent detection of ultrabroadband coherent infrared pulses up to 150 THz using air

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2013　Research paper (international conference proceedings)

Near-Infrared Time-Domain Spectroscopy using Broadband Phase-locked Electromagnetic Pulses

Ikufumi Katayama, Michitaka Bito, Eiichi Matsubara, Masaaki Ashida

2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2013　Research paper (international conference proceedings)

Near-infrared Pulse Induced Modulation of Quantum Cascade Lasers

Y. Saksaegawa, S. Saito, N. Sekine, M. Ashida, I. Hosako

2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR)　2013　Research paper (international conference proceedings)

Carrier envelope phase control of monocycle THz pulses using an artificial dispersive medium

Masaya Nagai, Eiichi Matsubara, Yosuke Minowa, Masaaki Ashida

2013 CONFERENCE ON AND INTERNATIONAL QUANTUM ELECTRONICS CONFERENCE LASERS AND ELECTRO-OPTICS EUROPE (CLEO EUROPE/IQEC)　2013　Research paper (international conference proceedings)

Ultrabroadband infrared pulse ranging from terahertz region to near infrared using air for both generation and detection

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2013 Conference on Lasers and Electro-Optics Europe and International Quantum Electronics Conference, CLEO/Europe-IQEC 2013　2013　Research paper (international conference proceedings)

Generation and detection of ultrabroadband infrared wave exceeding 200 THz

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

EPJ Web of Conferences　Vol. 41　2013　Research paper (international conference proceedings)

Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation

Masayoshi Ichimiya, Le Quang Phuong, Masaaki Ashida, Tadashi Itoh

Journal of Crystal Growth　Vol. 378　p. 372-375　2013　Research paper (scientific journal)

Coherent transitions in doped-germanium using intense few-cycle THz pulses

Masaya Nagai, Yutaka Kamon, Yosuke Minowa, Eiichi Matsubara, Masaaki Ashida

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013　Research paper (international conference proceedings)

Terahertz-Wave Absorbers Using a Photonic Crystal Slab

Ryoma Kakimi, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR)　2013　Research paper (international conference proceedings)

Optical Kerr effect of confined excitons coherently coupled with radiation wave

Masayoshi Ichimiya, Kenta Kamizono, Naoya Okamoto, Hajime Ishihara, Masaaki Ashida

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013　Research paper (international conference proceedings)

Generation and detection of ultrabroadband coherent infrared pulses with frequencies up to 200 THz using air plasma and 10 fs pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest　2013　Research paper (international conference proceedings)

Transitions from spontaneous emission to stimulated emission and superfluorescence of biexcitons confined in CuCl quantum dots

L. Q. Phuong, K. Miyajima, K. Maeno, T. Itoh, M. Ashida

JOURNAL OF LUMINESCENCE　Vol. 133　p. 77-80　2013/01　Research paper (scientific journal)

Optical Fabrication and Manipulation of Nanoparticles

M. Ashida

2012/12　Research paper (other academic)

Enhancement of Exciton Superradiance in CuCl Thin Films under Oblique Incidence

K. Kamizono, M. Ichimiya, H. Murata, H. Ishihara, M. Ashida

2012/12　Research paper (other academic)

Coherent Exciton-light Couplings in High-quality CuCl Thin Films

L. Q. Phuong, M. Ichimiya, H. Ishihara, M. Ashida

2012/12　Research paper (other academic)

Rare-earth Doped Y2O3 Nanophosphors Synthesized for Bio-imaging with Using CL and Fluorescence Microscopy

H. Niioka, T. Furukawa, M. Ichimiya, T. Nagata, M. Ashida, T. Araki, M. Hashimoto

2012/12　Research paper (other academic)

Luminescence Properties of Eu-doped GaN Grown by Selective-area Organometallic Vapor Phase Epitaxy

R. Hasegawa, R. Wakamatsu, A. Koizumi, H. Ofuchi, M. Ichimiya, D. Lee, Y. Terai, T. Honma, M. Ashida, Y. Fujiwara

2012/12　Research paper (other academic)

Multiple light-coupling modes of confined excitons observable in photoluminescence spectra of high-quality CuCl thin films

L. Q. Phuong, M. Ichimiya, H. Ishihara, M. Ashida

PHYSICAL REVIEW B　Vol. 86　No. 23　p. 234449-1-5　2012/12　Research paper (scientific journal)

ZnO Nanobox Luminescent Source Fabricated by Three-Dimensional Nanotemplate Pulsed-Laser Deposition

Azusa N. Hattori, Masayoshi Ichimiya, Masaaki Ashida, Hidekazu Tanaka

APPLIED PHYSICS EXPRESS　Vol. 5　No. 12　p. 125203-1-3　2012/12　Research paper (scientific journal)

CuCl薄膜における斜入射条件下での励起子輻射緩和の高速化

神薗建太, 一宮正義, 村田寛幸, 石原 一, 芦田昌明

2012/12

高密度CuCl量子ドット集合系における励起子分子超蛍光のパルス解析

池田圭吾, 石川 陽, 石原 一, 芦田昌明, 宮島顕祐

2012/12

光マニピュレートされたZnOナノ粒子の光学的特性評価

那脇洋平, 田原英明, 岡本慎也, 蓑輪陽介, 芦田昌明

2012/12

CdSeナノ粒子の作製と粒子の光学的選別

田原英明, 那脇洋平, 岡本慎也, 蓑輪陽介, 芦田昌明

2012/12

Ultrabroadband coherent infrared source of 1-200 THz using air plasma driven by 10 fs pulses

E. Matsubara, M. Nagai, M. Ashida

2012/11　Research paper (other academic)

THz dispersive mirror with metal disk array

M. Nagai, M. Kimura, Y. Minowa, M. Ashida

2012/11　Research paper (other academic)

Multiplication of Photoexcited carriers in Si thin film using optical pump-broadband THz probe spectroscopy

G. Yamashita, E. Matsubara, M. Nagai, T. Tayagaki, Y. Kanemitsu, M. Ashida

2012/11

希土類添加Y2O3ナノ蛍光体を用いたマルチモーダル蛍光・CL細胞イメージング

新岡宏彦, 古川太一, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2012/11

Extremely small luminescent ZnO nanobox structure fabricated by three-dimensional nanotemplate pulsed-laser deposition

A. N. Hattori, M. Ichimiya, M. Ashida, H. Tanaka

2012/10　Research paper (other academic)

希土類添加ナノ蛍光体粒子を用いた蛍光・CL細胞イメージング

新岡宏彦, 古川太一, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

生理研研究会, 招待講演　2012/10

Emission intensity from terahertz quantum cascade lasers under near-infrared optical pulse injection

Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida, I. Hosako

2012/09　Research paper (other academic)

Room temperature superradiance due to coherent coupling between light and extended single quantum state

Masayoshi Ichimiya, Hideki Yasuda, Masaaki Ashida, Hajime Ishihara, Tadashi Itoh

JOURNAL OF NON-CRYSTALLINE SOLIDS　Vol. 358　No. 17　p. 2357-2361　2012/09　Research paper (scientific journal)

Growth of high-quality CuCl thin films by a technique involving electron-beam irradiation

M. Ichimiya, L. Q. Phuong, M. Ashida, T. Itoh

2012/09　Research paper (other academic)

Room temperature superradiance due to coherent coupling between light and extended single quantum state

Masayoshi Ichimiya, Hideki Yasuda, Masaaki Ashida, Hajime Ishihara, Tadashi Itoh

JOURNAL OF NON-CRYSTALLINE SOLIDS　Vol. 358　No. 17　p. 2357-2361　2012/09　Research paper (scientific journal)

Multimodal Imaging via Light Microscopy and Cathodoluminescence Microscopy for Biological Specimens with Rare-earth Doped Nanophosphors

T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, M. Ashida, T. Araki, M. Hashimoto

2012/09

光ポンプ・広帯域THzプローブ分光によるSi薄膜における多重キャリア生成とその観測

山下元気, 松原英一, 永井正也, 太野垣健, 金光義彦, 芦田昌明

2012/09

高密度CuCl量子ドット集合系での励起子分子超蛍光パルスの励起エネルギー依存性

宮島顕祐, 池田圭吾, 石川 陽, 石原 一, 芦田昌明

2012/09

光マニピュレートされたZnOナノ粒子の光学顕微鏡と電子顕微鏡による特性評価

那脇洋平, 岡本慎也, 田原英明, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集　Vol. 67　No. 2　2012/09

光学顕微鏡とカソードルミネッセンス顕微鏡を用いたマルチモーダル細胞イメージング

新岡宏彦, 古川太一, 一宮正義, 永田智啓, 芦田昌明, 荒木勉, 橋本守

2012/09

高密度CuCl量子ドット集合系での励起子分子発光における増幅自然放出から超蛍光への移行過程

池田圭吾, 石川 陽, 石原 一, 芦田昌明, 宮島顕祐

2012/09

CdSeナノ粒子作成と光マニピュレーション

田原英明, 岡本慎也, 那脇洋平, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集　Vol. 67　No. 2　2012/09

OMVPE法によるEu添加GaNの選択成長と発光特性評価

長谷川亮介, 若松龍太, 小泉淳, 大渕博宣, 一宮正義, 李東建, 寺井慶和, 本間徹生, 芦田昌明, 藤原康文

2012/09

近赤外光パルスによるテラヘルツ量子カスケードレーザの強度変調

酒瀬川洋平, 齋藤伸吾, 関根徳彦, 芦田昌明, 寳迫 巌

2012/09

金属周期構造を用いたTHz パルスの位相制御

永井正也, 木村壮陽, 蓑輪陽介, 芦田昌明

応用物理学会学術講演会講演予稿集(CD-ROM)　Vol. 73rd　2012/09

10fsパルスで誘起した空気プラズマによる超広帯域コヒーレント赤外波の発生とその計測

松原英一, 永井正也, 芦田昌明

2012/09

The photoexcited spin-aligned state of high-density exciton magnetic polarons and the effect of magnetic field in semimagnetic semiconductor Cd0.8Mn0.2Te

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 24　No. 32　p. 5801-1-6　2012/08　Research paper (scientific journal)

Enhancement of coupling between light and excitons due to strong light confinement in CuCl thin films

K. Kamizono, M. Ichimiya, H. Murata, H. Ishihara, M. Ashida

2012/07　Research paper (other academic)

Low threshold lasing in a single ZnO microsphere in ultraviolet and the whole visible region

S. Okamoto, Y. Minowa, M. Ashida

2012/07　Research paper (other academic)

Ultrabroadband coherent electric field from far infrared to 200 THz using air plasma induced by 10 fs pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

APPLIED PHYSICS LETTERS　Vol. 101　No. 1　p. 011105-1-4　2012/07　Research paper (scientific journal)

CdSeナノ粒子の作製と光マニピュレーション

田原英明, 蓑輪陽介, 岡本慎也, 那脇洋平, 芦田昌明

ナノ学会大会講演予稿集　Vol. 10th　2012/06

CuCl薄膜における励起子超放射の斜入射効果

神薗建太, 一宮正義, 村田寛幸, 石原 一, 芦田昌明

2012/06

超流動ヘリウム中で作製された金属ナノ粒子の光マニピュレーション

那脇洋平, 板東真一郎, 岡本慎也, 一宮正義, 蓑輪陽介, 芦田昌明

ナノ学会大会講演予稿集　Vol. 10th　2012/06

超流動ヘリウム中でのレーザーアブレーションによるZnO微小球の作製 -構造と光学特性-

岡本慎也, 市川 聡, 蓑輪陽介, 芦田昌明

ナノ学会大会講演予稿集　Vol. 10th　2012/06

高輝度ナノ蛍光体粒子を用いたカソードルミネッセンス細胞イメージング

新岡宏彦, 古川太一, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2012/06

High-efficient THz electric pulse generation via optical rectification by suppressing stimulated Raman scattering

M. Nagai, E. Matsubara, M. Ashida

2012/05　Research paper (international conference proceedings)

ナノ蛍光体粒子とカソードルミネッセンス顕微鏡を用いたマルチカラー生体イメージング

新岡宏彦, 古川太一, 一宮正義, 芦田昌明, 荒木勉, 橋本守

日本顕微鏡学会 (つくば国際会議場, 2012/5/14-16, 招待講演)　2012/05

Well-dispersed nanophosphors for cathodoluminescence microscopy produced by using laser ablation method

T. Furukawa, H. Niioka, M. Ichimiya, T. Nagata, M. Ashida, T. Araki, M. Hashimoto

2012/04

Multicolor cathodoluminescence imaging for biological cells with using nanophosphors

H. Niioka, T. Furukawa, M. Ichimiya, M. Ashida, T. Araki, M. Hashimoto

2012/04

High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

OPTICS EXPRESS　Vol. 20　No. 6　p. 6509-6514　2012/03　Research paper (scientific journal)

Electric field detection of coherent synchrotron radiation in a storage ring generated using laser bunch slicing

I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh, M. Ashida

APPLIED PHYSICS LETTERS　Vol. 100　No. 11　p. 111112-11112.4　2012/03　Research paper (scientific journal)

3次元ナノテンプレートPLD法で作製した単一ZnOナノ構造からの高輝度発光

服部 梓, 一宮正義, 芦田昌明, 田中秀和

2012/03

サブピコ秒光パルスとLiNbO3を用いた高効率THz パルス発生

永井正也, 松原英一, 芦田昌明

2012/03

半導体微小球による低閾値レーザー発振

岡本慎也, 蓑輪陽介, 芦田昌明

応用物理学関係連合講演会講演予稿集(CD-ROM)　Vol. 59th　2012/03

超伝導微粒子の空間捕捉

鈴木伸明, 山本広大, 東川優理奈, 榎本勝成, 松島房和, 熊倉光孝, 芦田昌明, 森脇喜紀

2012/03

CuCl薄膜における光閉じ込めによるDFWMの変化

神薗建太, 一宮正義, 村田寛幸, 芦田昌明

2012/03

空気プラズマからの超広帯域コヒーレント赤外波の電場計測

松原英一, 永井正也, 芦田昌明

2012/03

励起光・プローブ光の対向配置でのテラヘルツポンププローブ分光法によるSi内部のキャリアダイナミクスの解明

吉井正浩, 松原英一, 永井正也, 芦田昌明, 坪内雅明

2012/03

金属微粒子の光マニピュレーション

板東真一郎, 岡本慎也, 那脇洋平, 蓑輪陽介, 芦田昌明

2012/03

CuCl量子ドット集合系における励起子分子超蛍光の発生機構

池田圭吾, 松田卓也, 石川 陽, 石原 一, 芦田昌明, 宮島顕祐

2012/03

誘導ラマン散乱の抑制による誘電体からのTHzパルス発生の高効率化

永井正也, 松原英一, 芦田昌明

2012/03

希土類ナノ蛍光体を用いた生体カソードルミネッセンスイメージングの高輝度化

古川太一, 新岡宏彦, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2012/03

ナノ蛍光体を用いた多色カソードルミネッセンス細胞イメージング

新岡宏彦, 古川太一, 一宮正義, 芦田昌明, 荒木勉, 橋本守

2012/03

Ferroelectric Soft Mode in a SrTiO3 Thin Film Impulsively Driven to the Anharmonic Regime Using Intense Picosecond Terahertz Pulses

I. Katayama, H. Aoki, J. Takeda, H. Shimosato, M. Ashida, R. Kinjo, I. Kawayama, M. Tonouchi, M. Nagai, K. Tanaka

PHYSICAL REVIEW LETTERS　Vol. 108　No. 9　2012/02　Research paper (scientific journal)

ナノ蛍光体粒子を用いたカソードルミネッセンス生体イメージング

新岡宏彦, 古川太一, 一宮正義, 芦田昌明, 荒木 勉, 橋本 守

2012/02

Phase compensation in THz frequency region using the mirror with metal disk array

Masaya Nagai, Masaharu Kimura, Yosuke Minowa, Masaaki Ashida

2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2012　Research paper (international conference proceedings)

High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2012　Research paper (international conference proceedings)

Photoluminescence dynamics in CuCl thin films under high-dense one- and two-photon excitations

Mitsutake Ando, Shin-ichi Uozumi, Ikufumi Katayama, Masayoshi Ichimiya, Masaaki Ashida, Jun Takeda

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 12　Vol. 9　No. 12　p. 2493-2496　2012　Research paper (international conference proceedings)

Trapping a Terahertz Wave in a Photonic-Crystal Slab

Ryoma Kakimi, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

2012 IEEE PHOTONICS CONFERENCE (IPC)　p. 562-563　2012　Research paper (international conference proceedings)

Generation and detection of ultrabroadband coherent infrared pulse with 200 THz bandwidth

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2012　Research paper (international conference proceedings)

High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2012　Research paper (international conference proceedings)

High-efficient THz electric pulse generation via optical rectification by suppressing stimulated Raman scattering

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

2012 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2012　Research paper (international conference proceedings)

The Intensity Modulation of THz-quantum Cascade Lasers by NIR Optical Pulse Injection

S. Saito, Y. Sakasegawa, N. Sekine, M. Ashida, I. Hosako

PROCEEDINGS OF PROGRESS IN ELECTROMAGNETICS RESEARCH SYMPOSIUM (PIERS 2012)　p. 1040-1042　2012　Research paper (international conference proceedings)

Photoluminescence dynamics in CuCl thin films under high-dense one- and two-photon excitations

Mitsutake Ando, Shin-ichi Uozumi, Ikufumi Katayama, Masayoshi Ichimiya, Masaaki Ashida, Jun Takeda

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 12　Vol. 9　No. 12　p. 2493-2496　2012　Research paper (international conference proceedings)

Trapping a terahertz wave in a photonic-crystal slab

Ryoma Kakimi, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

2012 IEEE Photonics Conference, IPC 2012　p. 562-563　2012　Research paper (international conference proceedings)

Photonic-Crystal Slab for Terahertz-Wave Integrated Circuits

Tsukasa Ishigaki, Masayuki Fujita, Masaya Nagai, Masaaki Ashida, Tadao Nagatsuma

2012 IEEE PHOTONICS CONFERENCE (IPC)　p. 774-775　2012　Research paper (international conference proceedings)

Generation and detection of ultrabroadband coherent infrared pulse with 200 THz bandwidth

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2012　Research paper (international conference proceedings)

Emission intensity from terahertz quantum cascade lasers under near-infrared optical pulse injection

Y. Sakasegawa, S. Saito, N. Sekine, M. Ashida, I. Hosako

2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2012　Research paper (international conference proceedings)

Phase compensation in THz frequency region using the mirror with metal disk array

Masaya Nagai, Masaharu Kimura, Yosuke Minowa, Masaaki Ashida

2012 37TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2012　Research paper (international conference proceedings)

High-efficiency terahertz pulse generation via optical rectification by suppressing stimulated Raman scattering process

Masaya Nagai, Eiichi Matsubara, Masaaki Ashida

International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz　2012　Research paper (international conference proceedings)

Generation of ultrabroadband coherent infrared wave with 200 THz bandwidth using air plasma driven by intense sub 10 fs pulses

Eiichi Matsubara, Masaya Nagai, Masaaki Ashida

2012 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2012　Research paper (international conference proceedings)

White-light lasing in ZnO microspheres fabricated by laser ablation

Shinya Okamoto, Yosuke Minowa, Masaaki Ashida

OXIDE-BASED MATERIALS AND DEVICES III　Vol. 8263　2012　Research paper (international conference proceedings)

新規絶縁体材料における高密度光励起と相転移現象のダイナミクス

芦田昌明

2012/01

Super-resolution imaging of nano phosphors via cathodoluminescence microscopy for biological imaging

H. Niioka, T. Furukawa, M. Ichimiya, M. Ashida, T. Araki, M. Hashimoto

2011/12

顕微分光によるZnO微小球の単一粒子時間分解分光とカソードルミネッセンス測定

岡本慎也, 蓑輪陽介, 芦田昌明

光物性研究会論文集　Vol. 22nd　2011/12

極短パルス光誘起での空気プラズマからの超広帯域赤外波放射

岩佐拓哉, 松原英一, 永井正也, 芦田昌明

2011/12

励起光・プローブ光の対向配置でのテラヘルツポンププローブ分光法によるSi内部のキャリアダイナミクスの解明

吉井正浩, 松原英一, 永井正也, 芦田昌明, 坪内雅明

2011/12

Generation of Ultrabroadband Infrared Wave Ranging up to 200 THz by an Intense sub 10 fs pulse

MATSUBARA Eiichi, NAGAI Masaya, ASHIDA Masaaki

IEICE technical report. Electron devices　Vol. 111　No. 338　p. 85-89　2011/12

光パルス入射に対する THz 帯量子カスケードレーザーの挙動

齋藤伸吾, 関根徳彦, 芦田昌明, 寳迫 巌

2011/12

テラヘルツ波の発生・検出技術の進展

芦田昌明

2011/12

Ultrabroadband Coherent Light Source Covering from Terahertz to Near Infrared using Air Plasma Induced by an Intense Extremely Short Pulse

E. Matsubara, M. Nagai, M. Ashida

2011/11　Research paper (other academic)

Multicolor Cathodoluminescence Microscopy for Biological Imaging with Nanophosphors

Hirohiko Niioka, Taichi Furukawa, Masayoshi Ichimiya, Masaaki Ashida, Tsutomu Araki, Mamoru Hashimoto

APPLIED PHYSICS EXPRESS　Vol. 4　No. 11　p. 112402-(3)　2011/11　Research paper (scientific journal)

ナノ蛍光体粒子を用いたマルチカラー生体カソードルミネッセンスイメージング

古川太一, 新岡宏彦, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2011/11

分散化ナノ蛍光体粒子を用いたカソードルミネッセンス生体イメージング

新岡宏彦, 古川太一, 一宮正義, 永田智啓, 芦田昌明, 荒木 勉, 橋本 守

2011/11

The Intensity Modulation of THz-quantum Cascade Lasers by Optical Pulse

S. Saito, N. Sekine, M. Ashida, I. Hosako

2011/10　Research paper (other academic)

Ultrafast and Efficient Photoresponse up to Room Temperature by Coherent coupling between Excitons and Radiation Wave

M. Ichimiya, H. Yasuda, M. Ashida, K. Mochizuki, H. Ishihara, T. Itoh

2011/10　Research paper (other academic)

Super-Resolution Imaging for Cells by using Cathodoluminescence

T. Furukawa, H. Niioka, M. Ichimiya, M. Ashida, T. Araki, M. Hashimoto

2011/09

1光子・2光子励起におけるCuCl薄膜の高密度励起発光ダイナミクス

安藤光健, 片山郁文, 一宮正義, 芦田昌明, 武田 淳

2011/09

Generation of ultrabroadband coherent infrared wave from air plasma induced by intense sub 10 fs pulses

E. Matsubara, M. Nagai, M. Ashida

2011/09

ZnO微小球の単一粒子時間分解分光

岡本慎也, 板東真一郎, 那脇洋平, 蓑輪陽介, 芦田昌明

日本物理学会講演概要集　Vol. 66　No. 2　2011/09

Possible transitions of biexciton luminescence confined in Quantum Dots

L. Q. Phuong, K. Miyajima, K. Maeno, T. Itoh, M. Ashida

2011/08

量子閉じ込め励起子の波動共鳴による室温非線形光応答

一宮正義, 保田英樹, 望月敬太, 芦田昌明, 石原 一, 伊藤 正

2011/08

カソードルミネッセンスを利用した生体細胞の超解像イメージング手法

古川太一, 新岡宏彦, 一宮正義, 芦田昌明, 荒木 勉, 橋本 守

2011/07

The effect of the etching process on the morphology and photoluminescence of porous amorphous SiC

Hoai Anh Nguyen, Kensuke Miyajima, Tadashi Itoh, Tran Cao Dao, Tuan Anh Cao, Truc Quynh Ngan Luong, Masaaki Ashida

Advances in Natural Sciences: Nanoscience and Nanotechnology　Vol. 2　No. 2　2011/06　Research paper (scientific journal)

Transitions From Spontaneous Emission To Stimulated Emission And Superfluorescence Of Biexcitons Confined In CuCl Quantum Dots

L. Q. Phuong, K. Miyajima, K. Maeno, T. Itoh, M. Ashida

2011/06　Research paper (other academic)

Ultrafast Photoresponse Overcoming Room Temperature Dephasing by Coherent Coupling of Light and Confined Excitons

M. Ichimiya, H. Yasuda, M. Ashida, K. Mochizuki, H. Ishihara, T. Itoh

2011/06　Research paper (other academic)

Transitions From Spontaneous Emission To Stimulated Emission And Superfluorescence Of Biexcitons Confined In CuCl Quantum Dots

L.Q.Phuong, K.Miyajima, K.Maeno, T.Itoh, M.Ashida

2011/06　Research paper (international conference proceedings)

Ultrafast Photoresponse Overcoming Room Temperature Dephasing by Coherent Coupling of Light and Confined Excitons

M.Ichimiya, H.Yasuda, M.Ashida, K.Mochizuki, H.Ishihara, T.Itoh

2011/06　Research paper (international conference proceedings)

ナノ粒子の光マニピュレーション -光で創る・光で操る-

M. Ashida

2011/06

新規絶縁体材料における高密度光励起と相転移現象のダイナミクス

芦田昌明

2011/06

Gerneration of Superfluorescence from Biexcitons in CuCl Quantum Dots under short pulse excitation

L. Q. Phuong, T. Sumino, K. Miyajima, S. Saito, M. Ashida

2011/03　Research paper (other academic)

Phase matching condition for ultrabroadband terahertz generation in a DAST Single Crystal

I. Katayama, M. Bito, R. Akai, H. Shimosato, K. Miyamoto, H. Ito, M. Ashida

2011/03

Efficient radiative recombination of multinode-type excitons up to room temperature in CuCl thin films

M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

JOURNAL OF LUMINESCENCE　Vol. 131　No. 3　p. 498-501　2011/03　Research paper (scientific journal)

Gerneration of Superfluorescence from Biexcitons in CuCl Quantum Dots under short pulse excitation

L. Q. Phuong, T. Sumino, K. Miyajima, S. Saito, M. Ashida

2011/03

光伝導アンテナによる光電場の直接検出

芦田昌明

2011/03

CuCl量子ドット集合系における励起子分子超蛍光の振動構造

宮島顕祐, 角野翼, L. Q. Phoung, 齋藤伸吾, 芦田昌明

2011/03

サブ10fs高強度圧縮光パルスによる広帯域コヒーレント赤外波発生

松原英一, 芦田昌明

2011/03

GENERATION OF SUPERFLUORESCENCE FROM BIEXCITON STATES IN CUCL QUANTUM DOTS UNDER TWO-PHOTON RESONANT EXCITATION

K. Miyajima, K. Maeno, S. Saito, M. Ashida, T. Itoh

2011/02

Room temperature degenerate four-wave mixing in CuCl thin films

Masayoshi Ichimiya, Keita Mochizuki, Masaaki Ashida, Hideki Yasuda, Hajime Ishihara, Tadashi Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 248　No. 2　p. 456-459　2011/02　Research paper (scientific journal)

Magnetically controlled broadband THz absorption in a multiferroic hexaferrite at room temperature

Eiichi Matsubara, Yohei Onishi, Taishi Ishikura, Tsuyoshi Kimura, Masaaki Ashida

Optics InfoBase Conference Papers　2011　Research paper (international conference proceedings)

Magnetically controlled broadband THz absorption in a multiferroic hexaferrite at room temperature

Eiichi Matsubara, Yohei Onishi, Taishi Ishikura, Tsuyoshi Kimura, Masaaki Ashida

2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2011　Research paper (international conference proceedings)

The Intensity Modulaton of THz-quantum Cascade Lasers by Optical Pulse

Shingo Saito, Norihiko Sekine, Masaaki Ashida, Iwao Hosako

2011 36TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ)　2011　Research paper (international conference proceedings)

Magnetic-field induced broadband THz absorption change in a multiferroic hexaferrite at room temperature

Eiichi Matsubara, Yohei Onishi, Taishi Ishikura, Tsuyoshi Kimura, Masaaki Ashida

2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011　2011　Research paper (international conference proceedings)

Biexcitonic superfluorescence from CuCl quantum dots under resonant two-photon excitation

Kensuke Miyajima, Kosuke Maeno, Shingo Saito, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1　Vol. 8　No. 1　2011　Research paper (international conference proceedings)

テラヘルツ波の先端研究と応用

芦田昌明

2011/01　Research paper (other academic)

コヒーレントシンクロトロン放射の電場検出とその応用

芦田昌明

2011/01　Research paper (other academic)

Transition from Amplified Spontaneous Emission to Superfluorescence from Biexcitons in Semiconductor Quantum Dots

K. Miyajima, Y. Kagotani, K. Maeno, T. Sumino, S. Saito, M. Ashida

2011 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)　2011　Research paper (international conference proceedings)

Biexcitonic superfluorescence from CuCl quantum dots under resonant two-photon excitation

Kensuke Miyajima, Kosuke Maeno, Shingo Saito, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1　Vol. 8　No. 1　p. 209-212　2011　Research paper (international conference proceedings)

Biexcitonic superfluorescence from CuCl quantum dots under resonant two-photon excitation

Kensuke Miyajima, Kosuke Maeno, Shingo Saito, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1　Vol. 8　No. 1　2011　Research paper (international conference proceedings)

Ultrabroadband terahertz wave generation and detection with DAST crystal and photoconductive antenna

M.Ashida

2010/12

Energy Splitting of Singlet-Triplet Exciton in CuCl Quantum Dots

D.Ueda, K.Miyajima, T.Itoh, M.Ashida

2010/12　Research paper (other academic)

Static Magnetic Kerr Rotation and Photoluminescence under the Weak and Strong Excitation for Cd1-xMnxTe

K.Abe, K.Miyajima, M.Ashida

2010/12　Research paper (other academic)

Spontaneous and stimulated emissions from biexcitons in CuCl quantum dots

L. Q. Phuong, K. Miyajima, T. Itoh, M. Ashida

2010/12　Research paper (other academic)

Oscillatory structure of biexcitonic superfluorescence in CuCl quantum dots

T.Sumino, K.Miyajima, T.Itoh, S.Saito, M.Ashida

2010/12　Research paper (other academic)

Study of Photoluminescence and Morphology for Porous Amorphous Silicon Carbide

N.H. Anh, K. Miyajima, T. Itoh, D.T. Cao, C. Tuan-Anh, L.T. Quynh-Ngan, M. Ashida

2010/12　Research paper (other academic)

Enhancement of spectral bandwidth in asynchronous optical sampling

K.Fususawa, E.Matsubara, M.Ashida

2010/12　Research paper (other academic)

Electric Field Detection of Coherent Synchrotron Terahertz Radiation

I. Katayama, H. Shimosato, M. Bito, K. Furusawa, M. Adachi, M. Shimada, H. Zen, S. Kimura, N. Yamamoto, M. Hosaka, M. Katoh, M. Ashida

2010/10

Photoinduced Magnetization of Magnetic Polarons in CdMnTe under High-Density Resonant Excitation

K. Abe, K. Miyajima, F. Yamada, K. Katayama, M. Ashida, T. Itoh

2010/09　Research paper (other academic)

Enhancement of spectral bandwidth of asynchronous optical sampling THz time domain spectroscopy (?)

K. Furusawa, H. Shimosato, M. Ashida

2010/09　Research paper (other academic)

Optical manipulation and micro-photoluminescence experiment of ZnO nano-particles

S. Okamoto, Y. Saito, S. Bando, T. Iida, H. Ishihara, M. Ashida

2010/09　Research paper (other academic)

Amplified spontaneous emission of biexciton luminescence from CuCl quantum dots

T.Sumino, K.Miyajima, S.Saito, M.Ashida, T.Itoh

2010/09　Research paper (other academic)

Magnetic Field Effect on Decay Time of Triplet Excitons in CuCl Quantum Dots III

D.Ueda, K.Miyajima, M. Ashida, T. Itoh

2010/09　Research paper (other academic)

Phase Matching Conditions for the Ultrabroadband Terahertz Generation Using DAST Single Crystals

I. Katayama, H. Shimosato, M. Bito, R. Akai, K. Miyamoto, H. Ito, M. Ashida

2010/09　Research paper (other academic)

Intrinsic biexciton lifetime in CuCl QDs under two-photon excitation of biexcitons

L. Q. Phuong, K. Miyajima, M. Ashida, T. Itoh

2010/09　Research paper (other academic)

CuCl 量子ドット集合系における励起子分子発光の超蛍光的時間特性III

宮島顕祐, 石川陽, 前野浩介, 齋藤伸吾, 芦田昌明, 石原一, 伊藤正

2010/09　Research paper (other academic)

Lasing in ZnO microspheres fabricated by laser ablation in superfluid helium

S. Okamoto, Y. Saito, S. Bando, M. Ashida, T. Itoh

2010/07　Research paper (international conference proceedings)

Ultrabroadband terahertz generation using 4-N,N-dimethylamino-4 &apos;-N &apos;-methyl-stilbazolium tosylate single crystals

I. Katayama, R. Akai, M. Bito, H. Shimosato, K. Miyamoto, H. Ito, M. Ashida

APPLIED PHYSICS LETTERS　Vol. 97　No. 2　2010/07　Research paper (scientific journal)

Confined Excitons with Ultrafast Radiative Decay Time Less Than 100 fs Enabling Survival at Room Temperature

M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

CLEO/QELS:2010, Technical Digest, QWG1　2010/07　Research paper (scientific journal)

Coherent Nonlinear Response Surviving at Room Temperature Caused by Ultrafast Radiative Decay of Confined Excitons

M. Ashida, M. Ichimiya, K. Mochizuki, H. Yasuda, H. Ishihara, T. Itoh

Optics InfoBase Conference Papers　2010/07　Research paper (international conference proceedings)

Coherent Nonlinear Response Surviving at Room Temperature Caused by Ultrafast Radiative Decay of Confined Excitons

M. Ashida, M. Ichimiya, K. Mochizuki, H. Yasuda, H. Ishihara, T. Itoh

Ultrafast Phenomena XVII (Oxford University Press, 2010) in press　2010/07　Research paper (scientific journal)

Ultrabroadband terahertz generation using 4-N,N-dimethylamino-4 &apos;-N &apos;-methyl-stilbazolium tosylate single crystals

I. Katayama, R. Akai, M. Bito, H. Shimosato, K. Miyamoto, H. Ito, M. Ashida

APPLIED PHYSICS LETTERS　Vol. 97　No. 2　2010/07　Research paper (scientific journal)

広帯域テラヘルツ分光法とその薄膜評価への応用

片山 郁文, 芦田 昌明

Journal of the Vacuum Society of Japan Vol. 53, No. 5, 301-308 (2010）　Vol. 53　No. 5　p. 301-308　2010/07　Research paper (scientific journal)

Development of Ultrabroadband Pump Probe Spectroscopy System Ranging from THz to ear Infrared

E. Matsubara, M. Bitoh, H. Shimosato, M. Ashida

2010/06

Amplified spontaneous emission of biexcitons confined in CuCl quantum dots

T. Sumino, S. Saito, M. Ashida, T. Itoh

2010/06

Lasing in ZnO microspheres

S. Okamoto, Y. Saito, S. Bando, M. Ashida, T. Itoh

2010/06

Exciton lifetime in CuCl quantum dots embedded in NaCl matrix under external magnetic field

D. Ueda, M. Ashida, T. Itoh

2010/06

Superfluorescence from an Ensemble of CuCl Quantum Dots under Two-Photon Excitation of Biexcitons

K. Miyajima, S. Saito, M. Ashida, T. Ito

2010/06　Research paper (other academic)

ナノからバルクへのクロスオーバー領域における励起子超放射

一宮正義, 望月啓太, 芦田昌明, 保田英樹, 石原 一, 伊藤 正

Vol. 9　No. 1　p. 29-32　2010/05　Research paper (other academic)

外部磁場下におけるCuClナノ微粒子の励起子寿命

上田 大, 宮島顕祐, 芦田昌明, 伊藤 正

2010/05　Research paper (other academic)

CuClナノ微粒子からの励起子分子発光の増幅自然放出

角野 翼, 宮島顕祐, 斎藤伸吾, 芦田昌明, 伊藤 正

2010/05　Research paper (other academic)

テラヘルツ帯から近赤外までの超広帯域ポンププローブ時間領域分光系の構築

松原英一, 芦田昌明

2010/05　Research paper (other academic)

励起子分子二光子共鳴励起下でのCuClナノ微粒子からの超蛍光

宮島顕祐, 齋藤伸吾, 芦田昌明, 伊藤 正

2010/05　Research paper (other academic)

コヒーレントシンクロトロン放射光のテラヘルツ電場計測

片山郁文, 下里弘, 尾藤道隆, 古澤慧, 阿達正浩, 島田美帆, 全炳俊, 木村真一, 山本尚人, 保坂将人, 加藤政博, 芦田昌明

2010/03　Research paper (other academic)

ZnOマイクロ微小球によるレーザー発振II

岡本慎也, 斎藤泰彦, 板東真一郎, 芦田昌明, 伊藤正

2010/03　Research paper (other academic)

ZnOナノ微粒子の作製と光マニピュレーション

齋藤泰彦, 岡本慎也, 板東真一郎, 芦田昌明, 伊藤正

2010/03　Research paper (other academic)

薄膜における高温縮退四光波混合の理論解析

保田英樹, 一宮正義, 望月敬太, 芦田昌明, 伊藤正, 石原一

2010/03　Research paper (other academic)

CuCl薄膜における高温縮退四光波混合

一宮正義, 望月敬太, 芦田昌明, 保田英樹, 石原一, 伊藤正

2010/03　Research paper (other academic)

20pHQ-10 Development of ultrabroadband pump probe spectroscopy system ranging from THz to near infrared

Matsubara E., Bitoh M., Shimosato H., Ashida M.

Meeting abstracts of the Physical Society of Japan　Vol. 65　No. 1　p. 744-744　2010/03　Research paper (other academic)

20pHK-2 Superfluorescent nature of time profiles of biexciton luminescence in the assembly of CuCl quantum dots II

Miyajima K., Maeno K., Sumino T., Saito S., Ashida M., Itoh T.

Meeting abstracts of the Physical Society of Japan　Vol. 65　No. 1　p. 737-737　2010/03　Research paper (other academic)

Ultrabroadband Electric Field Generation and Detection from Far Infrared to Optical Communication Frequency

Eiichi Matsubara, Michitaka Bitoh, Hiroshi Shimosato, Masaaki Ashida

35TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ 2010)　2010　Research paper (international conference proceedings)

Coherent Synchrotron Terahertz Radiation Using Electron Bunch Slicing

Ikufumi Katayama, Hiroshi Shimosato, Michitaka Bito, Kei Furusawa, Masahiro Adachi, Miho Shimada, Heishun Zen, Shin-ichi Kimura, Naoto Yamamoto, Masahito Hosaka, Masahiro Katoh, Masaaki Ashida

35TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ 2010)　2010　Research paper (international conference proceedings)

Broadband terahertz spectroscopy and its application to the characterization of thin films

Ikufumi Katayama, Masaaki Ashida

Journal of the Vacuum Society of Japan　Vol. 53　No. 5　p. 301-308　2010　Research paper (scientific journal)

THz Field Detection of the Coherent Synchrotron Radiation Produced by Laser Bunch Slicing

Ikufumi Katayama, Hiroshi Shimosato, Michitaka Bito, Kei Furusawa, Masahiro Adachi, Miho Shimada, Heishun Zen, Shin-ichi Kimura, Naoto Yamamoto, Masahito Hosaka, Masahiro Katoh, Masaaki Ashida

2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS)　2010　Research paper (international conference proceedings)

Thickness dependence of the soft ferroelectric mode in SrTiO3 thin films deposited on MgO (vol 128, pg 998, 2008)

Ikufumi Katayama, Hiroshi Shimosato, Masaaki Ashida, Iwao Kawayama, Masayoshi Tonouchi, Tadashi Itoh

JOURNAL OF LUMINESCENCE　Vol. 130　No. 1　p. 190-190　2010/01

AMPLIFIED SPONTANEOUS EMISSION AND SUPERFLUORESCENCE FROM BIEXCITONS IN CUCL QUANTUM DOTS

K. Miyajima, K. Maeno, S. Saito, M. Ashida, T. Itoh

11TH INTERNATIONAL CONFERENCE ON OPTICS OF EXCITONS IN CONFINED SYSTEMS (OECS11)　Vol. 210　2010　Research paper (other academic)

Confined Excitons with Ultrafast Radiative Decay Time Less Than 100 fs Enabling Survival at Room Temperature

M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS)　2010　Research paper (international conference proceedings)

Nonlinear THz Spectroscopy on the Dielectric Thin Films

Ikufumi Katayama, Hiroshi Aoki, Jun Takeda, Hiroshi Shimosato, Masaaki Ashida, Ryuhei Kinjo, Iwao Kawayama, Masayoshi Tonouchi, Masaya Nagai, Koichiro Tanaka

2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS)　2010　Research paper (international conference proceedings)

Confined Excitons with Ultrafast Radiative Decay Time Less Than 100 fs Enabling Survival at Room Temperature

M. Ichimiya, K. Mochizuki, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS)　2010　Research paper (international conference proceedings)

Optical manipulation of ZnO nanoparticles

Y. Saito, S. Okamoto, M. Ichimiya, M. Ashida, T. Itoh

2009/12　Research paper (other academic)

Lasing in ZnO microspheres

S.Okamoto, Y.Saito, M. Ashida, T. Itoh

2009/12　Research paper (other academic)

Observation of Superradiance by Nonlocal Wave Coupling of Light and Excitons in CuCl Thin Films

Masayoshi Ichimiya, Masaaki Ashida, Hideki Yasuda, Hajime Ishihara, Tadashi Itoh

PHYSICAL REVIEW LETTERS　Vol. 103　No. 25　2009/12　Research paper (scientific journal)

Anomalous biexciton luminescence in CuCl quantum dots

T. Sumino, K. Miyajima, S. Saito, M. Ashida, T. Itoh Home, resentation

2009/12　Research paper (other academic)

Superfluorescent pulsed emission from biexciton states in CuCl quantum dots

K. Miyajima, K. Maeno, T. Sumino, S. Saito, M. Ashida, T. Itoh

2009/12　Research paper (other academic)

Superfluorescent pulsed emission from biexcitons in an ensemble of CuCl quantum dots

K. Miyajima, S. Saito, M. Ashida, T. Itoh

2009/12　Research paper (international conference proceedings)

Superfluorescent pulsed emission from biexcitons in an ensemble of CuCl quantum dots

K. Miyajima, S. Saito, M. Ashida, T. Itoh

2009/12　Research paper (scientific journal)

Ultrabroadband Electric Field Detection from Microwave to Optical Communication Frequency

E. Matsubara, M. Bitoh, H. Shimosato, M. Ashida

2009/11　Research paper (international conference proceedings)

Magneto-optical Kerr measurement for the multiferroic material

Katsuichi Abe, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh

2009/11

Development of broadband and rapid THz-TDS system and its application to measurement of superconducting thin films

H. Shimosato, M. Ashida, I. Katayama, S. Saito, H. Shimakage, Z. Wang, K. Sakai

2009/11　Research paper (international conference proceedings)

Exciton lifetime in CuCl quantum dots embedded in NaCl matrix under external magnetic field

D. Ueda, K. Miyajima, M. Ashida, T. Itoh

2009/11

Nonlinear THz spectroscopy om Quantum Paraelectric SrTiO3

I. Katayama, H. Aoki, J. Takeda, M. Nagai, K. Tanaka, H. Shimosato, M. Ashida, T. Kinjo, I. Kawayama, M. Tonouchi

2009/09　Research paper (other academic)

Measurement of superconducting MgB2 thin films by broadband THz time domain spectroscopy II

H. Shimosato, I. Katayama, S. Saito, H. Shimakage, Z. Wang, M. Ashida, K. Sakai

2009/09　Research paper (other academic)

Enhancement of spectral bandwidth of asyncronous optical sampling THz time domain spectroscopy

K. Furusawa, H. Shimosato, M. Ashida

2009/09　Research paper (other academic)

Ultrabroadband electric field detection up to 180 THz by using photoconductive antenna

M. Bitoh, H. Shimosato, I. Katayama, M. Ashida

2009/09　Research paper (other academic)

Lasing in ZnO microspheres

S. Okamoto, Y. Saito, K. Inaba, M. Ashida, T. Itoh

2009/09　Research paper (other academic)

Broadband and Rapid THz-TDS System Using Photoconductive Antennas

H. Shimosato, I. Katayama, S. Saito, M. Ashida, Y. Kadoya, K. Sakai

2009/09　Research paper (other academic)

Fabrication of ZnO Nanoparticles by Laser Ablation in Various Environments

Y. Saito, S. Okamoto, M. Ashida, T. Itoh

2009/09

AMPLIFIED SPONTANEOUS EMISSION AND SUPERFLUORESCENCE FROM BIEXCITONS IN CUCL QUANTUM DOTS

K. Miyajima, K. Maeno, S. Saito, M. Ashida, T. Itoh

2009/09

Cathodoluminescence of SiC Nanotubes

T. Doki, K. Miyajima, M. Ashida, T. Itoh

2009/09

Solution structure of the silkworm beta GRP/GNBP3 N-terminal domain reveals the mechanism for beta-1,3-glucan-specific recognition

Kiyohiro Takahasi, Masanori Ochiai, Masataka Horiuchi, Hiroyuki Kumeta, Kenji Ogura, Masaaki Ashida, Fuyuhiko Inagaki

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA　Vol. 106　No. 28　p. 11679-11684　2009/07　Research paper (scientific journal)

Amplified Spontaneous Emission and Superfluorescence from Biexcitons in an Ensemble of Semiconductor Nanoparticles

K. Miyajima, K. Maeno, M. Ashida, T. Itoh

2009/05　Research paper (other academic)

Superfluorescent pulsed emission from biexcitons in an ensemble of semiconductor quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 21　No. 19　2009/05　Research paper (scientific journal)

Fabrication of ZnO Nanoparticles by Laser Ablation in Superfluid Helium

Y. Saito, S. Okamoto, K. Inaba, M. Ichimiya, M. Ashida, T. Itoh

2009/05　Research paper (other academic)

Tim-resolved photoluminescence measurement for CuCl under resonant two-photon excitation of biexcitons in high excitation regime

K. Miyajima, L. Q. Phuong, M. Ashida, T. Itoh

2009/03　Research paper (other academic)

Superfluorescent nature of time profiles of biexciton luminescence in the assembly of CuCl quantum dots

K. Maeno, K. Miyajima, M. Ashida, T. Itoh

2009/03　Research paper (other academic)

Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum dots

Kensuke Miyajima, Yuna Umemura, Kouichi Katayama, Masaaki Ashida, Tadashi Itoh

Physica Status Solidi (C) Current Topics in Solid State Physics　Vol. 6　No. 1　p. 53-56　2009　Research paper (international conference proceedings)

Polarization memory effect on nonlinear photoluminescence of semimagnetic semiconductor Cd0.8Mn0.2Te

Kouichi Katayama, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh

Physica Status Solidi (C) Current Topics in Solid State Physics　Vol. 6　No. 1　p. 34-37　2009　Research paper (international conference proceedings)

Room Temperature Degenerate Four-Wave Mixing Due to Ultrafast Radiative Decay of Confined Excitons

M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

2009 CONFERENCE ON LASERS AND ELECTRO-OPTICS AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2009), VOLS 1-5　p. 2367-2368　2009　Research paper (international conference proceedings)

Optical fabrication of wide-gap semiconductor nanoparticles in superfluid helium

Kazuhiro Inaba, Takuji Saito, Yasuhiko Saito, Masayoshi Ichimiya, Masaaki Ashida, Satoshi Ichikawa, Seiji Takeda, Tadashi Itoh

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1　Vol. 6　No. 1　p. 217-+　2009　Research paper (international conference proceedings)

Polarization memory effect on nonlinear photoluminescence of semimagnetic semiconductor Cd(0.8)Mn(0.2)Te

Kouichi Katayama, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1　Vol. 6　No. 1　p. 34-37　2009　Research paper (international conference proceedings)

Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum dots

Kensuke Miyajima, Yuna Umemura, Kouichi Katayama, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1　Vol. 6　No. 1　p. 53-56　2009　Research paper (international conference proceedings)

Infrared transient absorption spectra for excited transition of excitons and biexcitons in CuCl

Takaaki Yoshioka, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 6, NO 1　Vol. 6　No. 1　p. 296-299　2009　Research paper (international conference proceedings)

Electric Field Detection of Near-Infrared Light Using Photoconductive Sampling

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

ULTRAFAST PHENOMENA XVI　Vol. 92　p. 979-+　2009　Research paper (international conference proceedings)

Ultra-broadband field-resolved detection using photoconductive antenna from sub-THz to near-infrared

M. Ashida, M. Bito, H. Shimosato, I. Katayama

CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference　2009　Research paper (international conference proceedings)

Electric Field Detection of Near-Infrared Light Using Photoconductive Sampling

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

ULTRAFAST PHENOMENA XVI　Vol. 92　p. 979-+　2009　Research paper (international conference proceedings)

Biexciton lifetime in CuCl thin film under two-photon resonant excitation for high density regime

L. Q. PhuongA, B, K. MiyajimaA, C, M. AshidaA, T. Itoh A

2008/12　Research paper (other academic)

CuCl薄膜中の弱閉じ込め励起子における光学非線形性及び輻射幅の増大

松田宗和, 一宮正義, 芦田昌明, 伊藤 正

2008/12　Research paper (other academic)

CuCl量子ドットにおける励起子分子発光の超蛍光的時間特性

前野浩介A, 宮島顕祐A, 芦田昌明A, 伊藤正A

2008/12　Research paper (other academic)

超流動ヘリウム中のレーザーアブレーションによるZnO ナノ微粒子の作製

斉藤卓司A, 稲葉和宏A, 斎藤泰彦A, 一宮正義A, 芦田昌明A, 伊藤 正 A

2008/12　Research paper (other academic)

CuCl量子ドットにおける励起子及び励起子分子励起状態の閉じ込め効果

吉岡貴章A, 宮島顕祐A, Le Quang PhuongA,B, 芦田昌明A, 伊藤 正

2008/12　Research paper (other academic)

Ultrabroadband THz generation and detection with 5-fs pulses

M. Ashida

2008/10　Research paper (international conference proceedings)

Ultra-broadband terahertz time-domain spectroscopy for the study of photo-induced phase

M. Ashida, H. Shimosato, I. Katayama

2008/10　Research paper (international conference proceedings)

Ultra-Broadband Terahertz Wave Detection Using Photoconductive Antenna

Masaaki Ashida

JAPANESE JOURNAL OF APPLIED PHYSICS　Vol. 47　No. 10　p. 8221-8225　2008/10　Research paper (scientific journal)

CuCl 量子ドットにおける励起子及び励起子分子励起状態の閉じ込め効果

吉岡貴章, 宮島顕祐, 芦田昌明, 伊藤正

2008/09　Research paper (other academic)

広帯域テラヘルツ時間領域分光法を用いた誘電体薄膜評価

片山郁文, 下里 弘, Rana D. S, 川山 巌, 斗内政吉, 芦田昌明

2008/09　Research paper (other academic)

Large Exciton g-factor of CuCl Quantum Dots Embedded in NaCl crystal

F. Yamada, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2008/09　Research paper (international conference proceedings)

Observation of Large Optical Nonlinearity of Excitons in a CuCl Thin Film

M. Matsuda, M. Ichimiya, M. Ashida, T. Itoh

2008/09　Research paper (international conference proceedings)

Fabrication of ZnO Nanoparticles by Laser Ablation in Superfluid Helium

T. Saito, K. Inaba, Y. Saito, M. Ichimiya, M. Ashida, T. Itoh

2008/09　Research paper (international conference proceedings)

Unique Temporal Behavior of Biexciton Luminescence in CuCl Quantum Dots

K. Maeno, K. Miyajima, M. Ashida, T. Itoh

2008/09　Research paper (international conference proceedings)

Laser ablation and manipulation of CuCl nanoparticles in superfluid helium

K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara, T. Itoh

2008/09　Research paper (international conference proceedings)

Hardening of the ferroelectric soft mode in SrTiO(3) thin films

Ikufumi Katayama, Hiroshi Shimosato, Dhanvir Singh Rana, Iwao Kawayama, Masayoshi Tonouchi, Masaaki Ashida

APPLIED PHYSICS LETTERS　Vol. 93　No. 13　2008/09　Research paper (scientific journal)

Ultra-broadband terahertz field-resolved detection using photoconductive antenna

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

2008/09　Research paper (international conference proceedings)

Enhancement of internal magnetic field arise from high-spin state of dense magnetic polarons in Cd0.8Mn0.2Te

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

2008/07　Research paper (international conference proceedings)

Cathodoluminescence spectroscopy of ZnO nanoparticles fabricated by laser ablation in superfluid helium

K. Inaba, T. Saito, Y. Saito, M. Ichimiya, M. Ashida, T. Itoh

2008/07　Research paper (international conference proceedings)

Superfluorescence of biexcitons confined in CuCl quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

2008/07　Research paper (international conference proceedings)

NaCl結晶中のCuClナノ微粒子におけるZ3励起子のZeeman分裂"

山田冬樹, 宮島顕祐, 梅村裕奈, 片山浩一, 芦田昌明, 伊藤正

2008/06　Research paper (other academic)

Electric Field Detection of Near-Infrared Light Using Photoconductive Sampling

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

Vol. 92　p. 979-981　2008/06　Research paper (international conference proceedings)

Femtosecond-class radiative decay of multinode-type excitons in nano-to-bulk crossover regime

M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

JOURNAL OF LUMINESCENCE　Vol. 128　No. 5-6　p. 1062-1064　2008/05　Research paper (scientific journal)

Real-time analysis of nonlinear transient response of weakly confined excitons

H. Yasuda, M. Ichimiya, M. Ashida, T. Itoh, H. Ishihara

JOURNAL OF LUMINESCENCE　Vol. 128　No. 5-6　p. 814-817　2008/05　Research paper (scientific journal)

Laser ablation and manipulation of wide-gap semiconductor quantum dots in superfluid liquid helium

T. Itoh, K. Inaba, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara, S. Ichikawa

2008/05　Research paper (international conference proceedings)

Triplet states of free and bound excitons confined in CuCl quantum dots

K. Miyajima, Y. Umemura, K. Katayama, M. Ashida, T. Itoh

2008/05　Research paper (international conference proceedings)

Thickness dependence of the soft ferroelectric mode in SrTiO3 thin films deposited on MgO

Ikufumi Katayama, Hiroshi Shimosato, Masaaki Ashida, Iwao Kawayama, Masayoshi Tonouchi, Tadashi Itoh

JOURNAL OF LUMINESCENCE　Vol. 128　No. 5-6　p. 998-1000　2008/05　Research paper (scientific journal)

テラヘルツ時間領域分光法とその超広帯域化

芦田昌明

2008/03　Research paper (other academic)

超流動ヘリウム中におけるZnOナノ微粒子の作製

稲葉和宏, 斉藤卓司, 斎藤泰彦, 一宮正義, 芦田昌明, 市川聡, 竹田精治, 伊藤正

2008/03　Research paper (other academic)

広帯域テラヘルツ時間領域分光による超伝導体MgB2薄膜の測定

下里弘, 片山郁文, 齋藤伸吾, 島影尚, 辰巳正裕, 王鎮, 芦田昌明, 伊藤正, 阪井清美

2008/03　Research paper (other academic)

テラヘルツから近赤外に及ぶ超広帯域時間領域分光法の開発

赤井亮太, 下里弘, 片山郁文, 芦田昌明, 伊藤正

2008/03　Research paper (other academic)

NaCl中のCuCl量子ドットにおけるZ3励起子のｇ因子

山田冬樹, 宮島顕祐, 片山浩一, 芦田昌明, 伊藤正

2008/03　Research paper (other academic)

CuCl量子ドットにおける三重項励起子寿命の磁場効果II

梅村裕奈, 宮島顕祐, 片山浩一, 芦田昌明, 伊藤正

2008/03　Research paper (other academic)

Infrared Transient Absorption Spectra for Excitons and Biexcitons in CuCl

T. Yoshioka, K. Miyajima, H. Sawada, M. Ashida, T. Itoh

2008/03　Research paper (other academic)

半導体ナノ粒子の光マニピュレーション －光で創る・光で操る－

芦田昌明

2008/02　Research paper (other academic)

ナノ粒子の光マニュピレーション

芦田昌明

2008/01　Research paper (other academic)

光伝導アンテナによる広帯域テラヘルツ波分光法

芦田昌明

2008/01　Research paper (other academic)

Ultrabroadband THz Wave Detection Using Photoconductive Antenna

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

2008 33RD INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES, VOLS 1 AND 2　p. 588-588　2008　Research paper (international conference proceedings)

Ultrabroadband THz wave detection using photoconductive antenna

M. Ashida, R. Akai, H. Shimosato, I. Katayama, K. Miyamoto, H. Ito

33rd International Conference on Infrared and Millimeter Waves and the 16th International Conference on Terahertz Electronics, 2008, IRMMW-THz 2008　2008　Research paper (international conference proceedings)

Ultrabroadband THz Field Detection beyond 170THz with a Photoconductive Antenna

M. Ashida, R. Akai, H. Shimosato, I. Katayama, T. Itoh, K. Miyamoto, H. Ito

2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9　p. 1734-+　2008　Research paper (international conference proceedings)

Oscillatory Structures Originating from the Faraday Rotation of a New Nonlinear Photoluminescence Band of Co0.8Mn0.2Te

Kouichi Katayama, Kensuke Miyajima, Masaaki Ashida, Tadashi Itoh

Journal of the Korean Physical Society　Vol. 52　No. 5　p. 1558-1561　2008　Research paper (scientific journal)

Magnetic Field Effect on Decay Times of Free and Bound Excitons in CuCl Quantum Dots

Y. Umemura, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2007/12　Research paper (other academic)

Mid-infrared Transient Absorption for Excitons and Biexcitons in CuCl

T. Yoshioka, K. Miyajima, H. Sawada, M. Ashida, T. Itoh

2007/12　Research paper (other academic)

Mid-Infrared Transition between Rydberg 1s and 2p States for Excitons and Biexcitons in CuCl Quantum Dots

K. Miyajima, H. Sawada, T. Yoshioka, M. Ashida, T. Itoh

2007/12

Quantum-confined biexcitons in CuCl quantum dots and their unconventional optical properties

K. Miyajima, M. Ashida, T. Itoh

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 19　No. 44　2007/11　Research paper (scientific journal)

Magnetic Field Effect on Triplet Excitons Confined in CuCl Quantum Dots

Y. Umemura, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2007/09

High-density excitation effect on semimagnetic semiconductor CdMnTe V-High-spin-state of high-density magnetic polarons localized in alloy potential fluctuation-

K.Katayama, K.Miyajima, M.Ashida, T.Itoh

2007/09　Research paper (other academic)

Magnetic Field Effect on Decay Time of Triplet Excitons in CuCl Quantum Dots

Y. Umemura, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2007/09　Research paper (other academic)

Time-resolved photoluminescence spectra of biexcitons in CuCl quantum dots by Kerr gate method II

K. Miyajima, M. Ashida, T. Itoh

2007/09　Research paper (other academic)

Photoinduced High-Spin State of High-Density Magnetic Polarons in Cd0.8Mn0.2Te

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

2007/09　Research paper (international conference proceedings)

Size-selective excitation of biexcitons in CuCl quantum dots under two-photon resonant excitation

K. Miyajima, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 244　No. 9　p. 3297-3302　2007/09　Research paper (scientific journal)

Optical Properties of ZnO Nanocrystals Fabricated by Laser Ablation Method in Water

K. Miyajima, K. Inoue, M. Ichimiya, M. Ashida, T. Itoh

2007/05　Research paper (other academic)

Superfluorescence of Biexcitons in CuCl Quantum Dots under Two-Photon Resonant Excitation

K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida, T. Itoh

CLEO-QELS2007, Technical Digest, QMD1　2007/05　Research paper (scientific journal)

Magnetic Field Effect on Decay Time of Excitons in CuCl Quantum Dots

Y. Umemura, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2007/03　Research paper (other academic)

Ultrafast radiative decay of confined excitons due to long-range coherent coupling with radiation wave

M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series　2007　Research paper (international conference proceedings)

Ultrabroadband detection of terahertz radiation from 0.1 to 100 THz with photoconductive antenna

H. Shimosato, M. Ashida, T. Itoh, S. Saito, K. Sakai

ULTRAFAST OPTICS V　Vol. 132　p. 317-+　2007　Research paper (international conference proceedings)

Role of low-temperature-grown GaAs substrate of photoconductive antenna in broadband terahertz time domain spectroscopy

H. Shimosato, L. Katayama, S. Saito, M. Ashida, T. Itoh, Y. Kadoya, K. Sakai

2007 JOINT 32ND INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 15TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2　p. 477-+　2007　Research paper (international conference proceedings)

Real time analysis of ultrafast radiative decay of nondipole-type excitonic states in a thin film

H. Yasuda, M. Ichimiya, M. Ashida, T. Itoh, H. Ishihara

2007 PACIFIC RIM CONFERENCE ON LASERS AND ELECTRO-OPTICS, VOLS 1-4　p. 284-+　2007　Research paper (international conference proceedings)

Transition between Rydberg 1s and 2p Exciton states of Biexcitons in Semiconductor Quantum Dots

K. Miyajima, H. Sawada, M. Ashida, T. Itoh

2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5　p. 2546-2547　2007　Research paper (international conference proceedings)

Optical manipulation of semiconductor quantum dots in superfluid helium

Masaaki Ashida, Kazuhiro Inaba, Tadashi Itoh

PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES XV　Vol. 6468　2007　Research paper (international conference proceedings)

Observation of Soft-Mode Hardening and Broadening in SrTiO3 Thin Films by Broadband Terahertz Time-Domain Spectroscopy

Ikufumi Katayama, Hiroshi Shimosato, Masaaki Ashida, Iwao Kawayama, Masayoshi Tonouchi, Tadashi Itoh

2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5　p. 2747-+　2007　Research paper (international conference proceedings)

Transition between Rydberg 1s and 2p Exciton states of Biexcitons in Semiconductor Quantum Dots

K. Miyajima, H. Sawada, M. Ashida, T. Itoh

2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5　p. 2546-2547　2007　Research paper (international conference proceedings)

Superfluorescence of biexcitons in CuCl quantum dots under two-photon resonant excitation

K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida, T. Itoh

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series　2007　Research paper (international conference proceedings)

Modification of photonic band structure in an ordered polystyrene particle layer by controlling interparticle light-mode interaction

Hayato Minami, Masatsugu Kusunoki, Masaru Minamiguchi, Masayoshi Ichimiya, Masaaki Ashida, Tadashi Itoh

JOURNAL OF LUMINESCENCE　Vol. 122　p. 747-749　2007/01　Research paper (scientific journal)

Oscillatory Structures Originated from the Faraday Rotation of a New Nonlinear Photoluminescence Band of Cd0.8Mn0.2Te

K.Katayama, K.Miyajima, M.Ashida, T.Itoh

2006/12　Research paper (international conference proceedings)

Ultrafast luminescence of biexcitons confined in CuCl quantum dots under resonant two-photon excitation

K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida, T. Itoh

2006/12　Research paper (other academic)

Size-dependence of Infrared Transient Absorption for Excitons and Biexcitons Confined in CuCl Quantum Dots

H. Sawada, K. Miyajima, M. Ashida, T. Itoh

2006/12　Research paper (other academic)

Magnetic Field Effect on Photoluminescence spectrum and Decay Profile of Excitons

Y. Umemura, K. Miyajima, K. Katayama, M. Ashida, T. Itoh

2006/12　Research paper (other academic)

High-density selective excitation effect on excitons in semimagnetic semiconductor CdMnTe

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

Physica Status Solidi (B) Basic Research　Vol. 243　No. 14　p. 3806-3811　2006/11　Research paper (scientific journal)

Ultrafast emission under two-photon excitation of biexcitons in CuCl quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3795-3799　2006/11　Research paper (scientific journal)

Ultrafast emission under two-photon excitation of biexcitons in CuCl quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3795-3799　2006/11　Research paper (scientific journal)

Ultrafast emission under two-photon excitation of biexcitons in CuCl quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

Physica Status Solidi (B) Basic Research　Vol. 243　No. 14　p. 3795-3799　2006/11　Research paper (scientific journal)

Optical manipulation of CuCl nanoparticles under an excitonic resonance condition in superfluid helium

K. Inaba, K. Imaizumi, K. Katayama, M. Ichimiya, M. Ashida, T. Iida, H. Ishihara, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3829-3833　2006/11　Research paper (scientific journal)

High-density selective excitation effect on excitons in semimagnetic semiconductor CdMnTe

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3806-3811　2006/11　Research paper (scientific journal)

Ultrafast degenerate four-wave mixing in CuCl ultrathin films

M. Ichimiya, M. Ashida, H. Yasuda, H. Ishihara, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3800-3805　2006/11　Research paper (scientific journal)

High-density selective excitation effect on excitons in semimagnetic semiconductor CdMnTe

K. Katayama, K. Miyajima, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3806-3811　2006/11　Research paper (scientific journal)

Ultrafast emission under two-photon excitation of biexcitons in CuCl quantum dots

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS　Vol. 243　No. 14　p. 3795-3799　2006/11　Research paper (scientific journal)

半磁性半導体CdMnTeにおける高密度電子・正孔系のダイナミクス

片山浩一, 宮島顕祐, 芦田昌明, 伊藤正

2006/09　Research paper (other academic)

Time-resolved photoluminescence spectra of biexcitonsin CuCl quantum dots by Kerr gate method

K. Sakurai, Y. Kagotani, K. Miyajima, S. Saito, M. Ashida, T. Itoh

2006/09　Research paper (other academic)

Ultrafast luminescence under two-photon excitation of biexcitons in CuCl quantum dots

K. Miyajima, Y. Kagotani, K. Sakurai, S. Saito, M. Ashida, T. Itoh

2006/09　Research paper (other academic)

Temporal behavior of biexciton luminescence under two-photon excitation in CuCl quantum dots

Y Kagotani, K Miyajima, S Saito, M Ashida, T Itoh

JOURNAL OF LUMINESCENCE　Vol. 119　p. 33-37　2006/07　Research paper (scientific journal)

Temporal behavior of biexciton luminescence under two-photon excitation in CuCl quantum dots

Y Kagotani, K Miyajima, S Saito, M Ashida, T Itoh

JOURNAL OF LUMINESCENCE　Vol. 119　p. 33-37　2006/07　Research paper (scientific journal)

Ultrafast response of biexciton luminescence under two-photon resonant excitation in CuCl quantum dots

Y. Kagotani, K. Miyajima, S. Saito, M. Ashida, T. Itoh

2006/05

Nano-scale distribution of ZnO free exciton luminescence in ZnO : Zn microcrystals and its modification under electron beam excitation

M Ichimiya, T Horii, T Hirai, Y Sawada, M Minamiguchi, N Ohno, M Ashida, T Itoh

JOURNAL OF PHYSICS-CONDENSED MATTER　Vol. 18　No. 6　p. 1967-1975　2006/02　Research paper (scientific journal)

Free exciton luminescence of ZnO:Zn microcrystals under electron beam excitation

M. Ichimiya, Y. Sawada, M. Ashida, T. Itoh

Physica Status Solidi C: Conferences　Vol. 3　No. 4　p. 1189-1192　2006　Research paper (international conference proceedings)

物理科学，この１年 光科学

芦田昌明

パリティ　2006/01

Infrared transient absorption spectra of excitons and biexcitons confined in CuCl quantum dots

K. Miyajima, H. Sawada, M. Ashida, T. Itoh

Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006　2006　Research paper (international conference proceedings)

Cathodoluminescence properties of GaAs/AlGaAs pyramidal cap structures with high spatial resolution

Y. Sawada, M. Ichimiya, M. Ashida, S. Shimomura, S. Hiyamizu, T. Itoh

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10　Vol. 3　No. 10　p. 3553-+　2006　Research paper (international conference proceedings)

Ultrabroadband THz spectroscopy using rapid scanning method

H. Shimosato, T. Katashima, S. Saito, M. Ashida, T. Itoh, K. Sakai

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 10　Vol. 3　No. 10　p. 3484-+　2006　Research paper (international conference proceedings)

Free exciton luminescence of ZnO:Zn microcrystals under electron beam excitation

M. Ichimiya, Y. Sawada, M. Ashida, T. Itoh

Physica Status Solidi C: Conferences　Vol. 3　No. 4　p. 1189-1192　2006　Research paper (international conference proceedings)

Infrared transient absorption spectra of excitons and biexcitons confined in CuCl quantum dots

K. Miyajima, H. Sawada, M. Ashida, T. Itoh

Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006　2006　Research paper (international conference proceedings)

Two-photon absorption and lasing due to biexciton in CuCl quantum dots

Y Kagotani, K Miyajima, G Oohata, S Saito, M Ashida, K Edamatsu, T Itoh

JOURNAL OF LUMINESCENCE　Vol. 112　No. 1-4　p. 113-116　2005/04　Research paper (scientific journal)

Two-photon absorption and lasing due to biexciton in CuCl quantum dots

Y. Kagotani, K. Miyajima, G. Oohata, S. Saito, M. Ashida, K. Edamatsu, T. Itoh

J. Luminescence　2005/03　Research paper (scientific journal)

strongly correlated electron systems

M. Ashida

OPTRONICS　2005/03

Stable biexcitonic lasing of CuCl quantum dots under two-photon resonant excitation

G Oohata, Y Kagotani, K Miyajima, M Ashida, S Saito, K Edamatsu, T Itoh

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES　Vol. 26　No. 1-4　p. 347-350　2005/02　Research paper (scientific journal)

Two-photon excitation of confined biexcitons in CuCl quantum dots

K. Miyajima, G. Oohata, Y. Kagotani, M. Ashida, K. Edamatsu, T. Itoh

Physica E: Low-Dimensional Systems and Nanostructures　Vol. 26　No. 1-4　p. 33-36　2005/02　Research paper (international conference proceedings)

Highly efficient biexcitonic lasing of semiconductor quantum dots under resonant two-photon excitation

K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh

IQEC, International Quantum Electronics Conference Proceedings　Vol. 2005　p. 35-36　2005　Research paper (international conference proceedings)

Enhancement of degenerate four-wave mixing signal in CuCl nanostructures with high crystalline quality

M. Ichimiya, M. Hasegawa, H. Ishihara, M. Ashida, T. Itoh

IQEC, International Quantum Electronics Conference Proceedings　Vol. 2005　p. 775-776　2005　Research paper (international conference proceedings)

Sensitivity of photoconductive antenna for ultrabroadband terahertz radiation: Feasibility of detection over 100THz

M. Ashida, A. Doi, H. Shimosato, S. Saito, K. Sakai, T. Itoh

IQEC, International Quantum Electronics Conference Proceedings　Vol. 2005　p. 1471-1472　2005　Research paper (international conference proceedings)

Ultrabroadband THz wave detection beyond 80THz using photoconductive antenna

M Ashida, A Doi, T Itoh, S Saito, K Sakai

2005 Conference on Lasers & Electro-Optics (CLEO), Vols 1-3　p. 2114-2116　2005　Research paper (international conference proceedings)

Enhancement of quasi-phase-matched second harmonic generation with use of photonic band structure by optimizing densities of light modes

M. Minamiguchi, M. Ashida, T. Itoh

NLO 2004 Technical Digest　2004/07　Research paper (international conference proceedings)

Two-photon excitation of biexcitons and their lasing in semiconductor quantum dots

K. Miyajima, Y. Kagotani, M. Ashida, T. Itoh, G. Oohata, K. Edamatsu, S. Saito

OSA Trends in Optics and Photonics Series　Vol. 97　p. 759-760　2004　Research paper (international conference proceedings)

Strong mid-infrared transient absorption of one-dimensional copper oxide Sr<inf>2</inf>CuO<inf>3</inf>

M. Ashida, S. Uchida, Y. Tokura, M. Kuwata-Gonokami

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series　Vol. 74　2002　Research paper (international conference proceedings)

低次元銅酸化物の超高速非線形光学応答 －高温超伝導材料の関連物質による光スイッチの可能性－

日本物理学会誌　Vol. 57, 337.　2002

Dimensionality dependence of optical nonlinearity and relaxation dynamics in cuprates

M. Ashida, Y. Taguchi, Y. Tokura, R. T. Clay, S. Mazumdar, Yu Svirko, M. Kuwata-Gonokami

Europhysics Letters　Vol. 58　No. 3　p. 455-461　2002　Research paper (scientific journal)

Initerband two-photon transition in Mott insulator as a new mechanism for ultrafast optical nonlinearity

M Ashida, T Ogasawara, N Motoyama, H Eisaki, S Uchida, Y Taguchi, Y Tokura, M Kuwata-Gonokami, H Ghosh, A Shukla, S Mazumdar

INTERNATIONAL JOURNAL OF MODERN PHYSICS B　Vol. 15　No. 28-30　p. 3628-3632　2001/12　Research paper (scientific journal)

One-dimensional cuprate as a nonlinear optical material for ultrafast all-optical switching

M Ashida, T Ogasawara, Y Tokura, S Uchida, S Mazumdar, M Kuwata-Gonokami

APPLIED PHYSICS LETTERS　Vol. 78　No. 19　p. 2831-2833　2001/05　Research paper (scientific journal)

Low-dimensional perovskite copper oxide as a nonlinear optical material for all-optical switching

M. Ashida, T. Ogasawara, S. Uchida, Y. Tokura, M. Kuwata-Gonokami, S. Mazumdar

Conference on Lasers and Electro-Optics Europe - Technical Digest　2001　Research paper (international conference proceedings)

Ultrafast optical nonlinearity in the quasi-one-dimensional Mott insulator Sr2CuO3

T. Ogasawara, M. Ashida, N. Motoyama, H. Eisaki, S. Uchida, Y. Tokura, H. Ghosh, A. Shukla, S. Mazumdar, M. Kuwata-Gonokami

Physical Review Letters　Vol. 85　No. 10　p. 2204-2207　2000/09/04　Research paper (scientific journal)

Observation of electron-hole plasma via exciton Mott transition in CuCl by mid-infrared pump probe spectroscopy

M. Nagai, M. Ashida, R. Shimano, M. Kuwata-Gonokami

IQEC, International Quantum Electronics Conference Proceedings　2000　Research paper (international conference proceedings)

Giant and ultrafast optical nonlinearity in low dimensional perovskite copper oxides

M. Ashida, T. Ogasawara, N. Motoyama, H. Eisaki, S. Uchida, Y. Taguchi, Y. Tokura, M. Kuwata-Gonokami, H. Ghosh, A. Shukla, S. Mazumdar

Conference on Quantum Electronics and Laser Science (QELS) - Technical Digest Series　p. 183-184　2000　Research paper (scientific journal)

Ultrafast spin dynamics and critical behavior in half-metallic ferromagnet: Sr2FeMoO6

T. Kise, T. Ogasawara, M. Ashida, Y. Tomioka, Y. Tokura, M. Kuwata-Gonokami

Physical Review Letters　Vol. 85　No. 9　p. 1986-1989　2000　Research paper (scientific journal)

Lifetimes of singlet and triplet excitons in β-ZnP2

Osamu Arimoto, Daichi Miki, Kaizo Nakamura, Masaaki Ashida, Ken-Ichi Kan'no

Journal of the Physical Society of Japan　Vol. 68　No. 6　p. 2139-2143　1999　Research paper (scientific journal)

Relaxation dynamics into two types of luminescence states in C60 single crystals below 80 K

I. Akimoto, J. Azuma, M. Ashida, K. Kan'no

Journal of Luminescence　Vol. 76-77　p. 206-210　1998　Research paper (scientific journal)

Luminescence from C60 single crystals in glassy phase under site-selective excitation

I. Akimoto, M. Ashida, K. Kan'no

Chemical Physics Letters　Vol. 292　No. 4-6　p. 561-566　1998　Research paper (scientific journal)

Time-resolved study of exciton thermalization in NaNO2

A Kato, M Ashida, R Kato

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 66　No. 9　p. 2886-2892　1997/09　Research paper (scientific journal)

Temporal behavior of resonant secondary emission in NaNO2 temperature dependence

A Kato, M Ashida, R Kato

JOURNAL OF LUMINESCENCE　Vol. 72-4　p. 933-935　1997/06　Research paper (scientific journal)

Luminescence and superfluorescence-like emission from a thin layer of O₂-centers in KBr crystal.

Journal of Luminescence vol.72-74, 1997, 624.　1997/06

30p-YD-8 Vibrational Relaxation Dynamics of O^-_2 Centers in Alkali Halide Crystals

Ando T, Kato A, Ashida M, Kan'no K

Meeting Abstracts of the Physical Society of Japan　Vol. 52.1.2　1997

VUV reflection spectra of ferroelectric NaNO2

M. Ashida, O. Ohta, M. Kamada, Makoto Watanabe, Riso Kato

Journal of Electron Spectroscopy and Related Phenomena　Vol. 79　p. 55-58　1996　Research paper (scientific journal)

Superfluorescence of O2 - centers in alkali halides

M. Ashida, O. Morikawa, H. Arai, R. Kato

Progress in Crystal Growth and Characterization of Materials　Vol. 33　No. 1-3　p. 105-108　1996　Research paper (scientific journal)

Superfluorescence from O2 - molecules in alkali halide crystals

Masaaki Ashida, Ariyuki Kato, Osamu Morikawa, Riso Kato

Journal of Luminescence　Vol. 66-67　No. 1-6　p. 259-263　1995/12　Research paper (scientific journal)

Temperature dependence of resonant secondary emission in NaNO2 crystals

A Kato, M Ashida, R Kato

JOURNAL OF LUMINESCENCE　Vol. 66-7　No. 1-6　p. 264-267　1995/12　Research paper (scientific journal)

28a-Z-18 Superfluorescence of O_2^- Centers in Alkali Halide Crystals

Ashida M, Morikawa O, Arai H, Kato A, Kato R

Meeting Abstracts of the Physical Society of Japan　Vol. 1995.2　1995

Superfluorescence of O_2^- Molecules in Alkalihalide Crystals I

Ashida Masaaki, Kato Ariyuki, Kato Riso

Meeting Abstracts of the Physical Society of Japan　Vol. 50.2　1995

Superfluorescence of O_2 - Molecules in Alkalihalide Crystals II

Kato Ariyuki, Ashida Masaaki, Kato Riso

Meeting Abstracts of the Physical Society of Japan　Vol. 50.2　1995

RESONANT EMISSION UNDER EXCITATION OF ISOTOPIC MOLECULES IN NANO2 CRYSTALS

M ASHIDA, A KATO, R KATO

INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER　Vol. 2362　p. 187-193　1995　Research paper (international conference proceedings)

RESONANT EMISSION UNDER EXCITATION OF ISOTOPIC LEVEL IN NANO2

M ASHIDA, R KATO

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 63　No. 7　p. 2808-2817　1994/07　Research paper (scientific journal)

Preparation and Optical Properties of Transparent Glass‐Ceramics Containing Cobalt(ll) Ions

Katsuhisa Tanaka, Takash Mukai, Tsuguo Ishihara, Kazuyuki Hirao, Naohiro Soga, Seiji Sogo, Masaaki Ashida, Riso Kato

Journal of the American Ceramic Society　Vol. 76　No. 11　p. 2839-2845　1993　Research paper (scientific journal)

RELAXATION AND COHERENCE OF SINGLET-EXCITONS IN NANO2 CRYSTALS

J KOHLER, M HUCKE, D SCHMID, M ASHIDA, R KATO

JOURNAL OF LUMINESCENCE　Vol. 53　No. 1-6　p. 76-79　1992/07　Research paper (scientific journal)

Bound multiphonon complexes in NaNO2

R. Kato, M. Ashida, J. Köhler, D. Schmid

Physics Letters A　Vol. 157　No. 6-7　p. 435-440　1991/08/05　Research paper (scientific journal)

Slow thermalization of singlet excitons in NaNO2 crystals

J. Köhler, M. Ashida, R. Kato, Th Schmidt, D. Schmid

Journal of Luminescence　Vol. 47　No. 5　p. 239-248　1991　Research paper (scientific journal)

Temperature dependence of resonant secondary emission in NaNO2: Spectral behavior

Riso Kato, Yoshizo Kawaguchi, Masaaki Ashida

Solid State Communications　Vol. 74　No. 6　p. 419-423　1990　Research paper (scientific journal)

PHONON SIDEBANDS OF NU-00 LINE IN ABSORPTION AND LUMINESCENCE SPECTRA OF NANO2 - SPATIAL-DISPERSION OF NU-00 EXCITON

M ASHIDA, Y KAWAGUCHI, R KATO

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN　Vol. 58　No. 12　p. 4620-4625　1989/12　Research paper (scientific journal)