对数型非线性电介质中高斯光束的动态演化特性被引量：1

Dynamical Evolution of a Gauss beam in Logarithmically Nonlinear Electric Media

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摘要为了得到对数型非线性电介质中高斯光束的动态演化特性,将高斯光束作为入射波,采用数值方法求解波传播方程,讨论了振幅微扰和宽度微扰对其传播特性的影响.结果表明,高斯光束与介质中支持的明孤子匹配时,能够很快演化成稳定的空间明孤波;小的宽度微扰下,高斯光束经短距离传播后能够演化为明孤波;当出现强微扰时,高斯光束不能在对数型非线性介质中传播,而是呈现周期性的振荡现象. The Dynamical evolution of a Gauss beam in logarithmically nonlinear electric media is obtained. Using the Gaussian beam as the input wave, the beam propagation equation is solved by numerical methed. The effects of perturbations in amplitude and width on the stability of the Gauss beam are disussed. The results show that a matched of Gauss wave with a certain bright spatial optical soliton. A gauss beam wave can rapidy evolve to a steady-state bright spatial optical soliton. When the perturbations in amplitude and width with are very small, the incident beam can reshape itself and try to evolve into a bright soluton while it cannot propagate stably in the polymer when perturbation is larger.

作者吉选芒刘劲松

机构地区运城学院物理与电子工程系华中科技大学光电子科学与工程学院

出处《山西师范大学学报（自然科学版）》 2008年第3期50-53,共4页 Journal of Shanxi Normal University(Natural Science Edition)

基金山西省高的高学校科技开发项目(200611042)

关键词非线性光学对数型非线性电介质高斯光束 nonlinear optics logarithmically nonlinear electric media Gauss beam

分类号 O435 [机械工程—光学工程]

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参考文献11

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