Abstract

The multibeam acousto-optical Bragg diffraction of laser radiation is considered. This is splitting of an initial beam into several independently controlled beams (channels) without substantial light-power losses. Practically significant relationships that determine the conditions for implementing the multibeam diffraction and its main parameters have been obtained. It is shown that the necessary condition is the form of control radio signal that is close to a frequency (phase) modulated signal. Experimental studies were conducted on a polarization-insensitive acousto-optic deflector based on a paratellurite crystal. Practical applications of the multibeam diffraction are shown: laser image deposition, multichannel transmission (switching) of optical information, and the formation of the laser-beam profile.

中文翻译：

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基于多光束衍射的声光器件

摘要

考虑了激光辐射的多光束声光布拉格衍射。这是将初始光束分成几个独立控制的光束（通道），而没有实质的光功率损耗。已经获得了确定实现多光束衍射的条件及其主要参数的实际重要关系。示出了必要条件是接近频率（相位）调制信号的控制无线电信号的形式。在基于星云石晶体的对偏振不敏感的声光偏转器上进行了实验研究。显示了多光束衍射的实际应用：激光图像沉积，光学信息的多通道传输（切换）以及激光束轮廓的形成。