对数可饱和非线性介质对高斯光束的影响  

Impacts of Logarithmically Saturable Nonlinear Media on Gaussian Beams

作　　者：李大义[1] 唐永林[1] 陈建国[1] 康俊[1] 张科军[1] 

机构地区：[1]四川大学光电系,成都610064

出　　处：《中国激光》2000年第4期343-347,共5页Chinese Journal of Lasers

摘　　要：由非线性传播方程导出了对数可饱和非线性介质 (LSNM)中高斯光束参量变化所遵循的耦合方程 ,在输入参量偏离孤子条件较小的情况下导出了高斯光束变化的解析表达式 。Coupled equations, governing variations of defining parameters of Gaussian beam propagating in logarithmically saturable nonlinear media, have been deduced from nonlinear propagational equations. Analytical soultions for coupled equations have been derived for cases where the incident Gaussian beams deviate slightly from the spatial soliton. General discussions have been made on the main characteristics of the Gaussian type breath mode formed in the nonlinear media.

关 键 词：对数可饱和非线性介质 呼吸模式 高束光束 

分 类 号：TN241[电子电信—物理电子学]