Prof. Yasukazu Izawa Profile

Prof. Yasukazu Izawa

at Osaka Univ

SPIE Involvement:

Author

Publications (51)

Proceedings Article | 7 March 2019 Paper

Zero-phonon line pumped Yb:YAG TRAM laser oscillator with direct jet impingement cooling

Masayuki Fujita, Seiji Taniguchi, Haik Chosrowjan, Dazhi Li, Shinji Motokoshi, Yasukazu Izawa, Shingo Nishikata, Tomoya Morioka, Koichi Hamamoto, Hiroshi Ikebuchi, Yuichi Ohtani, Takeshi Kaneko, Hiroyuki Daigo

Proceedings Volume 10896, 108961Z (2019) https://doi.org/10.1117/12.2511118

KEYWORDS: Cooling systems, Oscillators, Continuous wave operation, High power lasers, Laser development

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Proceedings Article | 17 February 2010 Paper

Thermal effect of cryogenic Yb:YAG total-reflection active-mirror laser

H. Furuse, J. Kawanaka, N. Miyanaga, T. Saiki, M. Fujita, K. Imasaki, K. Takeshita, S. Ishii, Y. Izawa

Proceedings Volume 7578, 75780I (2010) https://doi.org/10.1117/12.840599

KEYWORDS: Thermal effects, Ceramics, Composites, Cryogenics, Liquids, Nitrogen, Temperature metrology, Laser applications, Luminescence, Laser optics

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Proceedings Article | 1 April 2008 Paper

Low density targets for laser-produced-plasma (LPP) extreme ultraviolet light source with high-CE and toward high-repletion supply

Keiji Nagai, Liqin Ge, Pejun Cai, Cao Pan, ZhongZe Gu, Takayoshi Norimatsu, Hiroaki Nishimura, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa, Kinioki Mima

Proceedings Volume 6921, 69212W (2008) https://doi.org/10.1117/12.773275

KEYWORDS: Tin, Extreme ultraviolet, Xenon, Liquids, Liquid crystals, Bioalcohols, Particles, Scanning electron microscopy, Foam, Lithium

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Proceedings Article | 21 March 2008 Paper

Characterization of extreme ultraviolet emission from tin-droplets irradiated with Nd:YAG laser plasmas

Tatsuya Aota, Yuki Nakai, Shinsuke Fujioka, Etsuo Fujiwara, Masashi Shimomura, Hiroaki Nishimura, Nobukatsu Nishihara, Noriaki Miyanaga, Yasukazu Izawa, Kunioki Mima

Proceedings Volume 6921, 69212T (2008) https://doi.org/10.1117/12.771536

KEYWORDS: Extreme ultraviolet, Plasmas, Optical spheres, Nd:YAG lasers, Signal detection, Pulsed laser operation, Laser energy, Spherical lenses, Databases, Plasma generation

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Proceedings Article | 20 March 2008 Paper

Advanced laser-produced EUV light source for HVM with conversion efficiency of 5-7% and B-field mitigation of ions

K. Nishihara, A. Sunahara, A. Sasaki, S. Fujioka, Y. Shimada, M. Nunami, H. Tanuma, M. Murakami, T. Aota, K. Fujima, H. Furukawa, T. Nishikawa, F. Koike, R. More, T. Kato, V. Zhakhovskii, K. Gamata, H. Ueda, H. Nishimura, Y. Yuba, K. Nagai, N. Miyanaga, Y. Izawa, K. Mima

Proceedings Volume 6921, 69210Y (2008) https://doi.org/10.1117/12.769086

KEYWORDS: Ions, Tin, Pulsed laser operation, Plasma, Extreme ultraviolet, Carbon dioxide lasers, Sputter deposition, Magnetism, Light sources, Etching

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Proceedings Article | 8 May 2007 Paper

Ultrafast phase transition of Si by femtosecond laser pulse irradiation

Masayuki Fujita, Yusaku Izawa, Masaki Hashida, Yuichi Setsuhara, Yasukazu Izawa, Chiyoe Yamanaka

Proceedings Volume 6346, 63463S (2007) https://doi.org/10.1117/12.739427

KEYWORDS: Laser ablation, Femtosecond phenomena, Silicon, Pulsed laser operation, Crystals, Laser crystals, Laser damage threshold, Laser irradiation, Semiconductor lasers, Transmission electron microscopy

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Proceedings Article | 24 March 2006 Paper

Energy spectra and charge state of debris emitted from laser-produced minimum mass tin plasmas

Shinsuke Fujioka, Hiroaki Nishimura, Tsuyoshi Ando, Nobuyoshi Ueda, Shinichi Namba, Tatsuya Aota, Masakatsu Murakami, Katsunobu Nishihara, Young-G. Kang, Atsushi Sunahara, Hiroyuki Furukawa, Yoshinori Shimada, Kazuhisa Hashimoto, Michiteru Yamaura, Yuzuri Yasuda, Keiji Nagai, Takayoshi Norimatsu, Noriaki Miyanaga, Yasukazu Izawa, Kunioki Mima

Proceedings Volume 6151, 61513V (2006) https://doi.org/10.1117/12.656071

KEYWORDS: Plasmas, Tin, Ions, Extreme ultraviolet, Pulsed laser operation, Mirrors, Chemical species, Light sources, Opacity, Extreme ultraviolet lithography

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Proceedings Article | 23 March 2006 Paper

Progress in LPP EUV source development at Osaka University

Noriaki Miyanaga, Hiroaki Nishimura, Shinsuke Fujioka, Tatsuya Aota, Shigeaki Uchida, Michiteru Yamaura, Yoshinori Shimada, Kazuhisa Hashimoto, Keiji Nagai, Takayoshi Norimatsu, Katsunobu Nishihara, Masakatsu Murakami, Vasilli Zhakhovskii, Young Kang, Atsushi Sunahara, Hiroyuki Furukawa, Akira Sasaki, Takeshi Nishikawa, Massahiro Nakatsuka, Hisanori Fujita, Koji Tsubakimoto, Hidetsugu Yoshida, Yasukazu Izawa, Kunioki Mima

Proceedings Volume 6151, 61511Q (2006) https://doi.org/10.1117/12.656555

KEYWORDS: Extreme ultraviolet, Tin, Plasma, Pulsed laser operation, Ions, Nd:YAG lasers, Laser development, YAG lasers, Absorption, Opacity

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Proceedings Article | 23 February 2006 Paper

Development of thermally controlled HALNA DPSSL for inertial fusion energy

Osamu Matsumoto, Ryo Yasuhara, Takashi Kurita, Tadashi Ikegawa, Takashi Sekine, Toshiyuki Kawashima, Junji Kawanaka, Takayoshi Norimatsu, Noriaki Miyanaga, Yasukazu Izawa, Masahiro Nakatsuka, Masahiro Miyamoto, Hirofumi Kan, Hiroyuki Furukawa, Shinji Motokoshi

Proceedings Volume 6101, 61011Q (2006) https://doi.org/10.1117/12.645644

KEYWORDS: Glasses, Cladding, Laser glasses, Thermal effects, Laser systems engineering, Fusion energy, Amplifiers, Pulsed laser operation, Absorption, High power lasers

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Proceedings Article | 6 May 2005 Paper

Target fabrication of low-density and nanoporous tin oxide as laser targets to generate extreme ultraviolet

Keiji Nagai, Q-c. Gu, T. Norimatsu, H. Nishimura, S. Fujioka, Y-z. Tao, T. Okuno, K. Nishihara, N. Miyanaga, Y. Izawa

Proceedings Volume 5751, (2005) https://doi.org/10.1117/12.600404

KEYWORDS: Tin, Extreme ultraviolet, Crystals, Oxides, Liquid crystals, Scanning electron microscopy, Plasma, Composites, Liquids, Optical spheres

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Proceedings Article | 6 May 2005 Paper

Estimations on high energy ions and neutral particles from LPP EUV light sources

H. Furukawa, T. Kawamura, T. Nishikawa, A. Sasaki, K. Fujima, S. Fujioka, H. Nishimura, K. Nishihara, N. Miyanaga, Y. Izawa, C. Yamanaka

Proceedings Volume 5751, (2005) https://doi.org/10.1117/12.597959

KEYWORDS: Particles, Extreme ultraviolet, Light sources, Ions, Xenon, Ionization, Laser ablation, Optical simulations, Laser development, Plasmas

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Proceedings Article | 6 May 2005 Paper

Evaluation of tin-foil targets for debris mitigation in laser generated EUV source

Michiteru Yamaura, Shigeaki Uchida, Susumu Takemoto, Yoshinori Shimada, Hiroaki Nishimura, Shinsuke Fujioka, Keiji Nagai, Takayoshi Norimatsu, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa, Chiyoe Yamanaka

Proceedings Volume 5751, (2005) https://doi.org/10.1117/12.599155

KEYWORDS: Extreme ultraviolet, Ions, Tin, Plasmas, Nd:YAG lasers, Cameras, Pulsed laser operation, Xenon, Particles, Foam

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Proceedings Article | 6 May 2005 Paper

Properties of EUV and particle generations from laser-irradiated solid- and low-density tin targets

Shinsuke Fujioka, Hiroaki Nishimura, Tomoharu Okuno, Yezheng Tao, Nobuyoshi Ueda, Tsuyoshi Ando, Hiroto Kurayama, Yuzuri Yasuda, Shigeaki Uchida, Yoshinori Shimada, Michiteru Yamaura, Qincui Gu, Keiji Nagai, Takayoshi Norimatsu, Hiroyuki Furukawa, Atsushi Sunahara, Young-G. Kang, Masakatsu Murakami, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa

Proceedings Volume 5751, (2005) https://doi.org/10.1117/12.598692

KEYWORDS: Tin, Extreme ultraviolet, Plasmas, Ions, Opacity, Mirrors, EUV optics, Pulsed laser operation, Laser ablation, Particles

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Proceedings Article | 23 March 2005 Paper

Observation of various material surfaces irradiated and cratered with focused ArF laser lights

Koichi Kasuya, Waldemar Mroz, Artur Prokopiuk, Takayoshi Notimatsu, Yasukazu Izawa, Sadao Nakai

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.611328

KEYWORDS: Absorption, Excimer lasers, Lead, Microscopes, Laser ablation, Tungsten, Pulsed laser deposition, Aluminum, Pulsed laser operation, Laser energy

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Proceedings Article | 23 March 2005 Paper

Quantum-defect-limited operation of Yb:YAG crystal

Junji Kawanaka, Takahiro Shoji, Shigeki Tokita, Masayuki Fujita, Yasukazu Izawa

Proceedings Volume 5777, (2005) https://doi.org/10.1117/12.611033

KEYWORDS: Crystals, Laser crystals, Diodes, Semiconductor lasers, Oscillators, Ytterbium, Fusion energy, Output couplers, Ions, Copper

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Proceedings Article | 20 September 2004 Paper

Experimental study on ablative stabilization of Rayleigh-Taylor instability of laser-irradiated targets

Keisuke Shigemori, Tatsuhiko Sakaiya, Kazuto Otani, Shinsuke Fujioka, Mitsuo Nakai, Hiroshi Azechi, Hiroyuki Shiraga, Yohei Tamari, Kazuki Okuno, Atsushi Sunahara, Hideo Nagatomo, Masakatsu Murakami, Katsunobu Nishihara, Yasukazu Izawa

Proceedings Volume 5448, (2004) https://doi.org/10.1117/12.548818

KEYWORDS: Laser ablation, X-rays, Laser irradiation, Electron transport, Convection, Physics, Optical simulations, Streak cameras, Laser engineering, Bromine

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Proceedings Article | 20 September 2004 Paper

Dependence of EUV emission properties on laser wavelength

Michiteru Yamaura, Shigeaki Uchida, Atsushi Sunahara, Yoshinori Shimada, Kazuhisa Hashimoto, Chiyoe Yamanaka, Keisuke Shigemori, Shinsuke Fujioka, Tomoharu Okuno, Keiji Nagai, Takayoshi Norimatsu, Hiroaki Nishimura, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa

Proceedings Volume 5448, (2004) https://doi.org/10.1117/12.557207

KEYWORDS: Extreme ultraviolet, Plasma, Tin, Laser applications, Optical simulations, Opacity, Lithography, Excimer lasers, Laser energy, Absorption

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Proceedings Article | 20 May 2004 Paper

Experimental study on basic properties of laser-produced EUV plasmas on GEKKO-XII laser facility

Keisuke Shigemori, Mitsuo Nakai, Yoshinori Shimada, Michiteru Yamaura, Kazuhisa Hashimoto, Shinsuke Fujioka, Hiroaki Nishimura, Shigeaki Uchida, Atsushi Sunahara, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa

Proceedings Volume 5374, (2004) https://doi.org/10.1117/12.533918

KEYWORDS: Extreme ultraviolet, Plasmas, Opacity, Tin, X-rays, Laser ablation, Aluminum, Pulsed laser operation, Optical filters, Laser irradiation

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Proceedings Article | 20 May 2004 Paper

Properties of EUV emissions from laserproduced tin plasmas

Yoshinori Shimada, Hiroaki Nishimura, Kazuhisa Hashimoto, Michiteru Yamaura, Keisuke Shigemori, Mitsuo Nakai, Shinsuke Fujioka, Shigeaki Uchida, Tomoharu Okuno, Takahiro Hibino, Nobuyoshi Ueda, Ryoji Matsui, Yezheng Tao, Keiji Nagai, Takayoshi Norimatsu, Toru Kawamura, Atsushi Sunahara, Katsunobu Nishihara, Noriaki Miyanaga, Masahiro Nakatsuka, Yasukazu Izawa, Chihiro Yamanaka

Proceedings Volume 5374, (2004) https://doi.org/10.1117/12.534959

KEYWORDS: Extreme ultraviolet, Tin, Plasmas, Spectroscopy, Spherical lenses, Laser applications, Lithography, Grazing incidence, Laser energy, Calibration

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Proceedings Article | 20 May 2004 Paper

Estimation of emission efficiency for laser-produced EUV plasmas

Toru Kawamura, Atsushi Sunahara, Kouhei Gamada, Kazumi Fujima, Fumihiro Koike, Hiroyuki Furukawa, Takeshi Nishikawa, Akira Sasaki, Takashi Kagawa, Richard More, Takako Kato, Masakatsu Murakami, Vasillii Zhakhovskii, Hajime Tanuma, Takashi Fujimoto, Yoshinori Shimada, Michiteru Yamaura, Kazuhisa Hashimoto, Shigeaki Uchida, Chiyoe Yamanaka, Tomoharu Okuno, Takahiro Hibino, Nobuyoshi Ueda, Ryoji Matsui, Yezheng Tao, Mitsuo Nakai, Keisuke Shigemori, Shinsuke Fujioka, Keiji Nagai, Takayoshi Norimatsu, Hiroaki Nishimura, Katsunobu Nishihara, Noriaki Miyanaga, Yasukazu Izawa

Proceedings Volume 5374, (2004) https://doi.org/10.1117/12.535031

KEYWORDS: Extreme ultraviolet, X-rays, Plasmas, Tin, Electrons, Ions, Opacity, Laser development, Solids, Pulsed laser operation

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Proceedings Article | 7 January 2004 Paper

Study on EUV emission properties of laser-produced plasma at ILE, Osaka

Mitsuo Nakai, Hiroaki Nishimura, Keisuke Shigemori, Noriaki Miyanaga, Takayoshi Norimatsu, Keiji Nagai, Ryoji Matsui, Takehiro Hibino, Tomoharu Okuno, F. Sohbatzadeh, Y. Tao, Kazuhisa Hashimoto, Michiteru Yamaura, Shinsuke Fujioka, Hideo Nagatomo, Vasilii Zhakhovskii, Katsunobu Nishihara, Shigeaki Uchida, Yoshinori Shimada, Hiroyuki Furukawa, Masahiro Nakatsuka, Yasukazu Izawa

Proceedings Volume 5196, (2004) https://doi.org/10.1117/12.504166

KEYWORDS: Extreme ultraviolet, Tin, Plasma, Opacity, X-rays, Spherical lenses, Laser ablation, Data modeling, Laser systems engineering, Laser applications

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Proceedings Article | 12 December 2003 Paper

Organic photovoltaic materials and capsule fabrication of relative materials toward IFE targets

Keiji Nagai, Takayoshi Norimatsu, Yasukazu Izawa, Tatsuhiko Yamanaka

Proceedings Volume 5228, (2003) https://doi.org/10.1117/12.537401

KEYWORDS: Laser ablation, Photovoltaics, Coating, Reflection, Foam, Organic photovoltaics, Magnetism, Absorption, Picosecond phenomena, Optical spheres

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Proceedings Article | 19 February 2003 Paper

Femtosecond laser ablation of metals: precise measurement and analytical model for crater profiles

Masaki Hashida, Masayuki Fujita, Masahiro Tsukamoto, Alexandre Semerok, Olivier Gobert, Guillaume Petite, Yasukazu Izawa, J.-F. Wagner

Proceedings Volume 4830, (2003) https://doi.org/10.1117/12.486538

KEYWORDS: Laser ablation, Laser damage threshold, Pulsed laser operation, Metals, Copper, Absorption, Femtosecond phenomena, Iron, Aluminum, Zinc

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Proceedings Article | 21 December 2001 Paper

Neutron enhancement and related recent studies on the fast ignitor at ILE Osaka University

Yoneyoshi Kitagawa, Ryosuke Kodama, Kazuo Tanaka, Yusuke Tohyama, Shin Akamatsu, Yasuhiko Sentoku, Hisanori Fujita, Takahisa Jitsuno, Hiroaki Nishimura, Shuji Sakabe, Yasukazu Izawa, Kunioki Mima, Tatsuhiko Yamanaka

Proceedings Volume 4510, (2001) https://doi.org/10.1117/12.451285

KEYWORDS: Magnetism, Plasma, Photonic integrated circuits, Ions, Pulsed laser operation, Optical amplifiers, Solids, Optical simulations, Fusion energy, Magnesium

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Proceedings Article | 25 January 2001 Paper

High-power DPSSL for laser fusion and its application to industry

Sadao Nakai, Tadashi Kanabe, Toshiyuki Kawashima, Masanobu Yamanaka, Yasukazu Izawa, Masahiro Nakatuka, Ranganathan Kandasamy, Hirofumi Kan, Teruo Hiruma, Masayuki Niino

Proceedings Volume 4184, (2001) https://doi.org/10.1117/12.414043

KEYWORDS: Fusion energy, Laser welding, High power lasers, Glasses, Laser development, Pulsed laser operation, Neodymium, Laser applications, Near field optics, Energy efficiency

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Proceedings Article | 16 August 2000 Paper

Development of high-average-power DPSSL with high beam quality

Sadao Nakai, Tadashi Kanabe, Toshiyuki Kawashima, Masanobu Yamanaka, Yasukazu Izawa, Masahiro Nakatuka, Ranganathan Kandasamy, Hirofumi Kan, Teruo Hiruma, Masayuki Niino

Proceedings Volume 4065, (2000) https://doi.org/10.1117/12.407358

KEYWORDS: Fusion energy, Laser welding, Pulsed laser operation, Semiconductor lasers, Laser development, Energy efficiency, Diffraction, Laser applications, Amplifiers, Optical amplifiers

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