A method is proposed that allows one to provide high-performance acousto-optic (AO) Bragg diffraction of two-color optical radiation at the highest possible frequency of a sound wave. The method is based on the use of AO cells together with a prism, with which two-color radiation is diluted at the required angle. The method is demonstrated based on the example of AO diffraction of a two-color Ar-laser radiation, which diffracts in a paratellurite crystal at the maximum possible frequency of a transverse “slow” sound wave, equal to ~200 MHz.

中文翻译：

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声波极限频率下双色辐射的声同音衍射

提出了一种方法，该方法可以在声波的最高可能频率下提供两种颜色的光辐射的高性能声光（AO）布拉格衍射。该方法基于将AO单元与棱镜一起使用，利用该棱镜可将双色辐射以所需角度稀释。该方法基于双色Ar激光辐射的AO衍射示例进行了演示，该射线在恒星“慢”声波的最大可能频率（等于〜200 MHz）处在星云石晶体中发生衍射。