低振幅双光子屏蔽光伏孤子的时间特性  

Temporal behavior of low-amplitude two-photon screening-photovoltaic spatial solitons

作　　者：吉选芒[1] 姜其畅[1] 刘劲松[2] 

机构地区：[1]山西运城学院物理与电子工程系,山西运城044000 [2]华中科技大学光电子科学与工程学院,湖北武汉430074

出　　处：《应用光学》2010年第6期927-932,共6页Journal of Applied Optics

基　　金：山西省高等学校科技开发基金资助课题(200611042)

摘　　要：为了得到低振幅双光子屏蔽光伏孤子时间特性的结果,采用数值模拟的方法对低振幅双光子屏蔽光伏孤子的时间特性进行了理论分析,得到了明和暗孤子时间特性的演化方程。结果表明:孤子的宽度随时间的演化单调递减到一个最小值直至稳态孤子的形成,在相同的演化时间内,孤子的半峰全宽随着孤子峰值强度和暗辐射比值的增大而变窄。In order to obtain the time-dependent behavior of one-dimensional two-photon screening-photovoltaic spatial solitons under lowamplitude conditions,the time-dependent behavior of one-dimensional two-photon screening-photovoltaic spatial solitons under low-amplitude conditions is presented theoretically.The time-dependent propagation equations of quasi-state bright and dark two-photon screening-photovoltaic solitons are obtained by numerical method.The results indicate that as time evolves,the intensity width of screening-photovoltaic spatial solitons decreases monotonously to a minimum value toward steady state.The higher the ratio of soliton peak intensity to the dark irradiation intensity is,the shorter the FWHM of photovoltaic solitons within propagation time will be.

关 键 词：非线性光学 双光子光折变效应 屏蔽光伏空间孤子 低振幅 时间行为 

分 类 号：TN206[电子电信—物理电子学] O437[机械工程—光学工程]