Abstract—The features of acousto-optic interaction are considered for the case where the duration of an acoustic pulse is much shorter than the time of crossing an optical beam by an elastic wave packet. It is shown that under these conditions the acoustic wave packet turns into a scanning element, which extracts information about the energy-geometric parameters of the cross section of the laser beam. The sequence of extracting information about the configuration of the laser beam cross section and the law of distribution of the power flux density in it is described. The established provisions and patterns are confirmed by numerical calculations. The results of numerical analysis were tested experimentally on a prototype of an acousto-optic processor with direct detection. A comparative analysis of the results of theoretical and experimental studies in the context of the effectiveness of the proposed method for measuring the energy-geometric parameters of laser radiation has been carried out.

中文翻译：

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测量激光辐射能量几何参数的声光方法

摘要-对于声脉冲的持续时间比弹性波包穿过光束的时间短得多的情况，考虑了声光相互作用的特征。可以看出，在这些条件下，声波包变成扫描元件，该扫描元件提取有关激光束横截面的能量几何参数的信息。描述提取关于激光束横截面的形状的信息的顺序以及其中的功率通量密度的分布规律。既定的规定和模式通过数值计算得到确认。数值分析结果在具有直接检测功能的声光处理器原型上进行了实验测试。