Investigation of stimulated Brillouin scattering for broadband KrF laser
Wang Xiao-Hui (王晓慧)ab, Lü Zhi-Wei (吕志伟)b, Lin Dian-Yang (林殿阳)b, Wang Chao (王超)b, Zhao Xiao-Yan (赵晓彦)b,Tang Xiu-Zhang (汤秀章)a, Zhang Hai-Feng (张海峰)a, Shan Yu-Sheng (单玉生)c
a Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150001, China; b National Satellite Ocean Application Service, Beijing 100081, China; c China Institute of Atomic Energy, Beijing 102413, China
Abstract Stimulated Brillouin scattering (SBS) numerical mode for broadband multimode KrF laser pump with optical breakdown has been built up in this paper. The basic premises of the model are that KrF spectrum is composed of a number of lines and SBS arises from these lines with coupling to some extent. The broadband SBS threshold strongly depends on pump bandwidth. SBS and optical breakdown occur nearly simultaneously when broadband SBS and breakdown have the same threshold. The decrease of saturation reflectivity for broadband pump radiation is explained with this model. Experimental results agree well with the model.
Received: 22 December 2003
Revised: 25 May 2004
Accepted manuscript online:
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