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着色丙酮中受激热散射和纯丙酮中受激布里渊散射的频率响应

, PP. 473-476

Keywords: 非线性光学,受激热散射,受激布里渊散射,频率

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Abstract:

受激布里渊散射(SBS)的频移量远大于受激热散射(STS),达到GHz的量级;而STS的频移量很小,一般只有几十MHz;在以前的实验中,要区分这两种散射需要非常复杂的实验系统,或者高精度、大测量范围的光谱分析仪器,这在一般的实验室条件下是难于满足的。实验研究了掺杂Cu(NO3)2的丙酮溶液中产生的STS与纯丙酮中的SBS的频率响应。结果显示随着泵浦能量的增加,SBS的线宽随机起伏,而STS的线宽有规律地变化。这可以替代高精度、大测量范围的光谱仪或者复杂系统而成为一种简便的区分STS和SBS的方法。据我们所知,目前文献中尚无相关报道。

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