1. Observation of strong amplification at 8.8 nm in the TCE scheme by a table-top pumping system.
- Author
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Kawachi, Tetsuya, Tanaka, Momoko, Sasaki, Akira, Kishimoto, Maki, Nishiuchi, Mamiko, Yasuike, Kazuhito, Hasegawa, Noboru, Kilpio, Alexander V., Lu, Peixiang, Tai, Renzhong, Tang, Huajin, Kado, Masataka, Nagashima, Keisuke, Koike, Masato, Daido, Hiroyuki, and Kato, Yoshiaki
- Subjects
LASERS ,TRANSITION metals - Abstract
We observed strong amplification ofthe transition of 4d 4p,J = 0 1 (the transition from (3d[SUB3/2], 4d[SUB3/2])[SUB0] to (3d[SUB3/2], 4p[SUB1/2])[SUB1]) of the Ni-like lanthanum (La) ions at a wavelength of 8.8 nm pumped by a compact CPA Nd:Glass laser light at a wavelength of 1.053 µm with a pumping energy of 18 J. The experimental gain coefficient and thc achieved gain-length product was 14.5 cm[SUP-1] and 7.7, respectively. In this experiment, the pumping laser pulse consisted ofa pre-pulse with a duration of 200 ps and a 7ps-duration main pulse, separated by 250 ps. A hydrodynamics simulation coupled with a collisional-radiative model showed that the present experimental condition generated a pre-formed plasma with small volume and made it possible by the main pulse to heat the high density region effectively. [ABSTRACT FROM AUTHOR]
- Published
- 2002