Development of a full spatial coherent x-ray laser at 13.9 nm

Keisuke Nagashima; Momoko Tanaka; Masaharu Nishikino; Maki Kishimoto; Masataka Kado; Tetsuya Kawachi; Noboru Hasegawa; Yoshihiro Ochi; Kouta Sukegawa; Renzhong Tai; Yoshiaki Kato

doi:10.1117/12.503910

19 December 2003 Development of a full spatial coherent x-ray laser at 13.9 nm

Keisuke Nagashima, Momoko Tanaka, Masaharu Nishikino, Maki Kishimoto, Masataka Kado, Tetsuya Kawachi, Noboru Hasegawa, Yoshihiro Ochi, Kouta Sukegawa, Renzhong Tai, Yoshiaki Kato

Author Affiliations +

Proceedings Volume 5197, Soft X-Ray Lasers and Applications V; (2003) https://doi.org/10.1117/12.503910
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

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Keisuke Nagashima, Momoko Tanaka, Masaharu Nishikino, Maki Kishimoto, Masataka Kado, Tetsuya Kawachi, Noboru Hasegawa, Yoshihiro Ochi, Kouta Sukegawa, Renzhong Tai, and Yoshiaki Kato "Development of a full spatial coherent x-ray laser at 13.9 nm", Proc. SPIE 5197, Soft X-Ray Lasers and Applications V, (19 December 2003); https://doi.org/10.1117/12.503910

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