摘要
结合ＳＲＳ实验，重点研究了聚焦位置对Ｒａｍａｎ介质中的物理过程、Ｓｔｏｋｅｓ光的输出特性的影响，比较了ＳＲＳ阈值和转换效率的实验结果与理论预期。
This article deals with the physical process when a high intensity broadband KrF Laser beam passes through gaseous Raman medium. We discuss the parameter dependence of the threshold power and conversion efficiency of SRS. Based on the analysis of SRS initiation and calculation of stokes laser modes formation, as well as the spatial propagation and amplification, we focus on influence of focus position on physical process, especially the Stokes output characteristic. By comparison between experimental results and theoretical expectation, we clarify some ambiguous viewpoints widely existing in the literature of SRS.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
1998年第4期505-512,共8页
High Power Laser and Particle Beams
基金
国家863激光技术领域资助
关键词
宽带泵浦
自发散射
SRS
四波混频
激光束
broadband pump, spontaneous scattering, four wave mixing, SRS initiation, gain focusing, mode threshold
