J. Phys. IV France
Volume 11, Numéro PR2, Juillet 2001
X-Ray Lasers 2000
Page(s) Pr2-251 - Pr2-254
7th International Conference on X-Ray Lasers

J. Phys. IV France 11 (2001) Pr2-251-Pr2-254

DOI: 10.1051/jp4:2001246

Recombination laser in the exploding-type-pumping using a 30-nm thin membrane target

T. Tomie, H. Yashiro, T. Aota and Y. Kurashima

Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki 305-8568, Japan

In order to increase the gain length product for the [MATH] line (13.4 nm) of hydrogen-like Nitrogen in the "exploding type pumping" of irradiating a 30 nm thick SiN membrane target with a few ps pulse, the pumping laser system is up-graded. For crucially important issue of suppressing a pre-pulse, the energy of the front-end of the pumping laser system was increased by one order. Beam pattern of the pumping laser pulse on the vacuum chamber window was improved with an image relay. In order to start experiments of a water-window laser, chirping pulse amplification in e-beam pumped KrF laser system is planned.

© EDP Sciences 2001