High compression ratio backward Raman conversion for high brightness excimer laser systems

Author

Nishioka, Hajime ; Kimura, Kazuhiko ; Ueda, Ken-ichi ; Takuma, Hiroshi

Author_Institution

Inst. for Laser Sci., Univ. of Electro-commun., Tokyo, Japan

Volume

29

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

2251

Lastpage

2258

Abstract

A scheme of backward Raman pulse compression is proposed in which the backward first Stokes pulse is amplified under stationary conditions and the backward second Stokes under transient conditions by choosing an appropriate Raman medium. The compression factor and efficiency are improved by insertion of selective absorbers for the second Stokes component. The feasibility of such a scheme is demonstrated by an experiment in which a 249-nm UV pulse of 20-ns duration has been compressed into a 30-ps pulse with an power gain of 150 and energy conversion efficiency of 22%. Higher compression ratio and higher efficiency is expected under improved conditions

Keywords

Raman lasers; brightness; excimer lasers; optical pumping; stimulated Raman scattering; 20 ns; 22 percent; 249 nm; 30 ps; Raman medium; SRS; UV pulse; backward Raman conversion; backward Raman pulse compression; backward first Stokes pulse; backward second Stokes; compression factor; energy conversion efficiency; high brightness excimer laser systems; high compression ratio; power gain; pulse amplification; pulse compression efficiency; selective absorbers; stationary conditions; stimulated Raman scattering; transient conditions; Brightness; Brillouin scattering; Laser beams; Laser excitation; Optical pulse compression; Optical pulses; Pulse amplifiers; Pulse compression methods; Pump lasers; Stimulated emission;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.237501

Filename

237501