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Start Over Author "T. Bizen" Journal nature photonics
2 results on '"T. Bizen"'

1. A compact X-ray free-electron laser emitting in the sub-ångström region

Author

Noritaka Kumagai, Shinichi Matsubara, Takao Asaka, Shinsuke Suzuki, Yukito Furukawa, Hiromitsu Tomizawa, Miho Ishii, Shukui Wu, Kei Sawada, Sunao Takahashi, Sakuo Matsui, Kenji Tamasaku, Kenji Fukami, Hitoshi Tanaka, Kunikazu Takeshita, T. Seike, Atsushi Tokuhisa, Noriyoshi Azumi, Hiroaki Kimura, Nobuteru Nariyama, Tetsuya Ishikawa, Takahiro Sato, Teruaki Hasegawa, Hideo Kitamura, Tsumoru Shintake, Shun Ono, Toru Ohata, Yoshihiro Asano, Akihiro Yamashita, Hirokazu Maesaka, Haruhiko Ohashi, Mitsuhiro Yamaga, T. Hirono, H. Ego, Takemasa Masuda, Yuji Otake, Naoyasu Hosoda, Makina Yabashi, Tatsuyuki Sakurai, Takaki Hatsui, Yoichi Kirihara, Mitsuru Nagasono, Takashi Kameshima, Atsushi Higashiya, Hideki Takebe, Chikara Kondo, Kazuaki Togawa, Yuichi Inubushi, Akio Kiyomichi, Choji Saji, Takashi Ohshima, Katsutoshi Shirasawa, Shunji Goto, Togo Kudo, Xavier Maréchal, Takahiro Matsumoto, Toshiro Itoga, Kenichi Yanagida, Yasumasa Joti, T. Bizen, Tadashi Togashi, Hirofumi Hanaki, Kensuke Tono, Toru Hara, Chao Zhang, Takahiro Inagaki, Ryotaro Tanaka, Toru Fukui, Hideki Aoyagi, Masahiro Kago, Tomohiro Matsushita, T. Kobayashi, Takashi Tanaka, and Takashi Sugimoto

Subjects
Physics, Maximum power principle, business.industry, Free-electron laser, Physics::Optics, Pulse duration, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Gain-switching, law.invention, SACLA, Optics, law, Optoelectronics, Laser power scaling, business, Lasing threshold
Abstract

Researchers report sub-angstrom fundamental-wavelength lasing at the SPring-8 Angstrom Compact Free-Electron Laser in Japan. The output has a maximum power of more than 10 GW, a pulse duration of 10−14 s and a lasing wavelength of 0.634 A.

Published
2012
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2. A compact free-electron laser for generating coherent radiation in the extreme ultraviolet region

Author

Tomohiro Matsushita, Kenichi Yanagida, Sunao Takahashi, Sakuo Matsui, Haruhiko Ohashi, Shukui Wu, Shunji Goto, Chao Zhang, Tetsuya Ishikawa, Toru Ohata, Hitoshi Tanaka, Tsumoru Shintake, Mitsuru Nagasono, Yoshihito Tanaka, Hiroaki Kimura, Hideo Kitamura, Makina Yabashi, Yuji Otake, T. Tanikawa, Yujong Kim, Atsushi Higashiya, Ryotaro Tanaka, Takemasa Masuda, Naoyasu Hosoda, Takashi Ohshima, Kenji Tamasaku, T. Kobayashi, Takashi Tanaka, Xavier Maréchal, Akihiro Yamashita, T. Hirono, Yoshihiro Asano, Tetsuya Takagi, Hirokazu Maesaka, Shinobu Inoue, Miho Ishii, Toru Fukui, Masanobu Kitamura, Kazuaki Togawa, Masao Takeuchi, Katsutoshi Shirasawa, T. Bizen, Tadashi Togashi, K. Onoe, Takahiro Inagaki, and Toru Hara

Subjects
Physics, Range (particle radiation), Amplified spontaneous emission, business.industry, Free-electron laser, Radiation, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, law.invention, SACLA, Optics, law, Extreme ultraviolet, Optoelectronics, Thermal emittance, business
Abstract

Single-pass free-electron lasers based on self-amplified spontaneous emission1,2,3,4 are enabling the generation of laser light at ever shorter wavelengths, including extreme ultraviolet5, soft X-rays and even hard X-rays6,7,8. A typical X-ray free-electron laser is a few kilometres in length and requires an electron-beam energy higher than 10 GeV (refs 6, 8). If such light sources are to become accessible to more researchers, a significant reduction in scale is desirable Here, we report observations of brilliant extreme-ultraviolet radiation from a 55-m-long compact self-amplified spontaneous-emission source, which combines short-period undulators with a high-quality electron source operating at a low acceleration energy of 250 MeV. The radiation power reaches saturation at wavelengths ranging from 51 to 61 nm with a maximum pulse energy of 30 µJ. The ultralow emittance (0.6π mm mrad) of the electron beam from a CeB6 thermionic cathode9 is barely degraded by a multiple-stage bunch compression system that dramatically enhances the beam current from 1 to 300 A. This achievement expands the potential for generating X-ray free-electron laser radiation with a compact 2-GeV machine. Free-electron lasers can produce powerful pulses of radiation at very short wavelengths, even in the hard-X-ray region. In general, however, they comprise facilities several kilometres in length. A 55-m-long laser could open up the technology to a broader range of researchers.

Published
2008
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