J. Phys. IV France 11 (2001) Pr2-3-Pr2-10
X-ray laser development at Advanced Photon Research CenterY. Kato, A. Nagashima, K. Nagashima, M. Kado, T. Kawachi, M. Tanaka, N. Hasegawa, G. Sukegawa, S. Nanba, P. Lu and A. Sasaki
Advanced Photon Research Center, Kansai Research Establishment, Japan Atomic Energy Research Institute, 8-1 Umemidai, Kizu, Souraku, Kyoto 619-0215, Japan
Overall activity at the Advanced Photon Research Center is reviewed, with emphasis on x-ray laser program. A 15-TW Nd:glass CPA laser has been developed for x-ray laser experiments. In the preliminary experiments on the transient collisional excitation x-ray laser, a gain of 14 cm-1 has been obtained at 11.9 nm with the Ni-like Sn ions by a short (1-ps) prepulse irradition.
Approaches toward improving x-ray laser coherence by high-harmonics amplification and extending to shorter wavelengths by using thin foil targets are described.
© EDP Sciences 2001