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Compression of high-power KrF laser pulse by backward Raman scattering using focused geometry

Published online by Cambridge University Press:  01 April 1999

K. KUWAHARA ,
E. TAKAHASHI ,
Y. MATSUMOTO  and
Y. OWADANO
K. KUWAHARA
Affiliation:
Department of Electrical Engineering, Faculty of Science and Engineering, Science University of Tokyo, 2641 Yamazaki, Noda, Chiba, Japan 2788510
E. TAKAHASHI
Affiliation:
Electrotechnical Laboratory, Agency of Industrial Science and Technology, 1-1-4 Umezono, Tsukuba, Ibaraki, Japan 3058568
Y. MATSUMOTO
Affiliation:
Electrotechnical Laboratory, Agency of Industrial Science and Technology, 1-1-4 Umezono, Tsukuba, Ibaraki, Japan 3058568
Y. OWADANO
Affiliation:
Electrotechnical Laboratory, Agency of Industrial Science and Technology, 1-1-4 Umezono, Tsukuba, Ibaraki, Japan 3058568
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Abstract

We are working on the generation of the high-power UV pulse by backward Raman pulse amplification. This report deals with the generation of the high-power backward first Stokes light using a simple focusing geometry. The high-power Stokes light, which grows from spontaneous scattered light in the focal region, can be obtained by focusing the high-energy KrF pump pulse into a Raman cell filled with methane gas. The intensity of the pump pulse increases significantly near the focus. This pulse produces a serious effect of the nonlinear refractive index. We mixed xenon gas into the Raman medium to compensate for this effect. As a result, a stable generation of the high-power single backward first Stokes light can be obtained.

Type
Research Article
Information
Laser and Particle Beams , Volume 17 , Issue 2 , April 1999 , pp. 275 - 280
Copyright
© 1999 Cambridge University Press

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