Effects of second-order dispersion of ultrashort laser pulse on stimulated Raman scattering  

作　　者：Yanqing Deng Dongning Yue Mufei Luo Xu Zhao Yaojun Li Xulei Ge Feng Liu Suming Weng Min Chen Xiaohui Yuan Jie Zhang 

机构地区：[1]Key Laboratory for Laser Plasmas(Ministry of Education),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai,China [2]Collaborative Innovation Center of IFSA,Shanghai Jiao Tong University,Shanghai,China

出　　处：《High Power Laser Science and Engineering》2022年第6期41-48,共8页高功率激光科学与工程（英文版）

基　　金：supported by NSAF(No.U1930111)of China;the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA25030200).

摘　　要：The influence of second-order dispersion(SOD)on stimulated Raman scattering(SRS)in the interaction of an ultrashort intense laser with plasma was investigated.More significant backward SRS was observed with the increase of the absolute value of SOD(|ψ2|).The integrated intensity of the scattered light is positively correlated to the driver laser pulse duration.Accompanied by the side SRS,filaments with different angles along the laser propagation direction were observed in the transverse shadowgraph.A model incorporating Landau damping and above-threshold ionization was developed to explain the SOD-dependent angular distribution of the filaments.

关 键 词：second-order dispersion stimulated Raman scattering ultrashort intense laser 

分 类 号：TN24[电子电信—物理电子学] O437.3[机械工程—光学工程]