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Proceedings Paper

Development of a full spatial coherent x-ray laser at 13.9 nm
Author(s): Keisuke Nagashima; Momoko Tanaka; Masaharu Nishikino; Maki Kishimoto; Masataka Kado; Tetsuya Kawachi; Noboru Hasegawa; Yoshihiro Ochi; Kouta Sukegawa; Renzhong Tai; Yoshiaki Kato
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Paper Abstract

We have succeeded in developing a laser-pumped x-ray laser with full spatial coherence at 13.9 nm. A highly directed x-ray laser beam with the divergence of 0.2 mrad was generated from the double target experiment, where a seeding light from the first laser medium was amplified in the second medium. The observed divergence is close to the diffraction limited value within a factor of two. The seeding light was amplified in the second medium without refraction influence and the gain coefficient was about 8 cm-1. The gain region of the second medium was far away from the target surface compared with that of the first medium and located in the considerably low density region. From the measurement of visibility, it was found that the spatial coherent length is longer than the beam diameter.

Paper Details

Date Published: 19 December 2003
PDF: 8 pages
Proc. SPIE 5197, Soft X-Ray Lasers and Applications V, (19 December 2003); doi: 10.1117/12.503910
Show Author Affiliations
Keisuke Nagashima, Japan Atomic Energy Research Institute (Japan)
Momoko Tanaka, Japan Atomic Energy Research Institute (Japan)
Masaharu Nishikino, Japan Atomic Energy Research Institute (Japan)
Maki Kishimoto, Japan Atomic Energy Research Institute (Japan)
Masataka Kado, Japan Atomic Energy Research Institute (Japan)
Tetsuya Kawachi, Japan Atomic Energy Research Institute (Japan)
Noboru Hasegawa, Japan Atomic Energy Research Institute (Japan)
Yoshihiro Ochi, Japan Atomic Energy Research Institute (Japan)
Kouta Sukegawa, Japan Atomic Energy Research Institute (Japan)
Renzhong Tai, Japan Atomic Energy Research Institute (Japan)
Yoshiaki Kato, Japan Atomic Energy Research Institute (Japan)


Published in SPIE Proceedings Vol. 5197:
Soft X-Ray Lasers and Applications V
Ernst E. Fill; Szymon Suckewer, Editor(s)

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