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强非局域介质中的厄米-椭圆高斯空间光孤子

, PP. 349-352

Keywords: 非线性光学,厄米-椭圆高斯空间光孤子,分离变量法,椭圆对称响应强非局域介质

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Abstract:

研究了傍轴厄米-椭圆高斯光束在强非局域非线性介质中的传输特性.依据强非局域介质响应函数特征宽度远大于光束束宽,对非局域非线性薛定谔方程进行了近似简化,得到了介质响应函数为椭圆对称情形下的强非局域模型.在此基础上利用分离变量法得到了厄米-椭圆高斯空间光孤子解析解及其形成的条件.进一步研究发现,随着厄米-椭圆高斯空间光孤子阶数的增大,光束束宽增大,介质的非局域程度相对减弱;要获得高阶椭圆高斯空间光孤子,必须提高非局域介质的非局域程度.最低阶的厄米-椭圆高斯空间光孤子就是椭圆高斯空间光孤子.

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