等离子体中受激Raman效应引起的近简并四波混频  

NEARLY DEGENERATE FOUR-WAVE MIXING IN PLASMA BY STIMULATED RAMAN SCATTERING

作　　者：马锦秀[1] 陈荣清[1] 徐至展[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《物理学报》1991年第4期568-574,共7页Acta Physica Sinica

基　　金：国家自然科学基金

摘　　要：本文研究等离子体中由于受激Raman散射激发起来的电子等离子体波引起的近简并四波混频。文中解析地导出此情况下等离子体介质的三阶非线性极化率,并讨论其位相匹配条件。通过求解偶合波方程得到位相复共轭反射率,并详细研究该反射率与泵浦光和探针光的频率差以及与相互作用长度的关系。This paper studies the nearly degenerate four-wave mixing in plasma which is caused by the electron plasma wave excited via the process of stimulated Raman scattering. The third-order nonlinear susceptibilities of the plasma are derived analytically and the condition to satisfy the phase matching is discussed. The couple-wave equations are solved to obtain the phase conjugate reflectivity. The dependence of the reflectivily on the frequency difference between the pump and the probe beam as well as on the interaction length is studied both analytically and numerically.

关 键 词：等离子体 受激拉曼效应 四波混频 

分 类 号：O534[理学—等离子体物理]