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.
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This study was supported by budget funding within the framework of the State Job on the topic no. 0030-2019-0014.
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Antonov, S.N., Rezvov, Y.G. An Acousto-Optical Deflector Based on Paratellurite: Increasing the Thermal Stability of Parameters. Instrum Exp Tech 64, 729–733 (2021). https://doi.org/10.1134/S0020441221040011
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DOI: https://doi.org/10.1134/S0020441221040011