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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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帽顶光束z扫描特征曲线的非对称参量
, PP. 42-46
Keywords: 非线性光学,z扫描,非对称参量,非线性折射
Abstract:
研究了描述帽顶光束z扫描曲线峰谷相对大小的非对称参量a随远场光阑的线性透过率s和三阶非线性折射相移φ1之间的变化关系.结果表明对于光克尔介质,当s=0.156时,帽顶光束z扫描特征曲线的峰高等于谷低且与三阶非线性折射相移φ1无关,实验中取这一特殊值s,可以很方便地对测量的结果进行归一化处理.此外,分析了高阶非线性效应对非对称参量a的影响,发现当s=0.156时,可以从单一z扫描特征曲线来判断非线性光学介质是否具有高阶非线性效应以及高阶非线性系数的符号.
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