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An Acousto-Optical Deflector Based on Paratellurite: Increasing the Thermal Stability of Parameters
Instruments and Experimental Techniques ( IF 0.4 ) Pub Date : 2021-09-14 , DOI: 10.1134/s0020441221040011
S. N. Antonov 1 , Yu. G. Rezvov 2
Affiliation  

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:

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。

更新日期:2021-09-15
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