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科学通报  2011 

低振幅双光子光伏孤子的时间及演化特性分析

DOI: 10.1360/972010-1205, PP. 215-221

Keywords: 非线性光学,光伏空间孤子,低振幅,时间行为

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Abstract:

为了研究一维开路条件下低振幅双光子光伏孤子的时间及演化特性,推导了含时间参量的空间电荷场,给出了含时光波的动态演化方程.采用数值方法求解开路低振幅一维双光子光伏空间亮、暗和灰孤子的数值解,分别得到了双光子光伏空间亮、暗和灰孤子波形强度包络,在此基础上得到亮、暗和灰孤子的时间及演化特性.结果表明,初始阶段形成的宽度较宽的孤子,其宽度随时间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.亮、暗和灰孤子有类似的时间演化特性.

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