Abstract

A peak power of 4 TW has been obtained in KrF with an output energy of 1.5 J in 390 fsec from an electron-beam-pumped amplifier. The energy of the amplified spontaneous emission was as low as 1.8%. The pulse width was measured by the newly developed third-order autocorrelation technique based on the XeF C–A transition. Amplifiers increased the initial pulse width of 210 fsec to 390 fsec. The process of pulse-width broadening was investigated in detail. It was confirmed that the two-photon process contributes to small absorption in CaF₂ by the luminescence of self-trapped excitons. A terawatt-class KrF laser system with a moderate repetition rate was developed for applications to multiphoton processes.

© 1989 Optical Society of America

Multiterawatt subpicosecond KrF laser

A. Endoh, M. Watanabe, N. Sarukura, and S. Watanabe
Opt. Lett. 14(7) 353-355 (1989)

Design and performance of a multiterawatt Cr:LiSrAlF₆ laser system

T. Ditmire, H. Nguyen, and M. D. Perry
J. Opt. Soc. Am. B 11(4) 580-590 (1994)

100-fs, 10-Hz, terawatt KrF laser

M. Mizoguchi, K. Kondo, and S. Watanabe
J. Opt. Soc. Am. B 9(4) 560-564 (1992)

Generation of input signals for ArF amplifiers

S. Szatmári and F. P. Schäfer
J. Opt. Soc. Am. B 6(10) 1877-1883 (1989)

160-fsec XeCl excimer amplifier system

J. H. Glownia, J. Misewich, and P. P. Sorokin
J. Opt. Soc. Am. B 4(7) 1061-1065 (1987)