Abstract

The phenomena that occur during internal heating (release of the control radio power) of an acousto-optic deflector based on paratellurite with heat removal from the piezoelectric transducer through a liquid contact were experimentally investigated. It was found that, in addition to the temperature drift of the velocity of sound and the refractive indices, the temperature inhomogeneity has a significant effect on the deflector characteristics. In this case, the volume of the crystal behaves like an optical wedge, which is optically denser near the transducer and less dense at a distance from it. The effect of internal compensation of the thermal deviation of the diffracted-beam position at a certain deflector orientation is detected.

中文翻译：

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基于亚碲酸盐的声光偏转器：提高参数的热稳定性

摘要

实验研究了在基于副碲酸盐的声光偏转器的内部加热（控制无线电功率的释放）过程中发生的现象，通过液体接触从压电换能器中去除热量。结果表明，除了声速和折射率的温度漂移外，温度不均匀性对偏转器特性也有显着影响。在这种情况下，晶体的体积表现得像一个光楔，在换能器附近光密度更大，而在远离它的地方密度更小。检测在某个偏转器方向上衍射光束位置的热偏差的内部补偿效果。