Abstract
The technology for creating a broadband highly efficient piezoelectric transducer (PET) for generating a slow acoustic mode in an acousto-optic paratellurite crystal is based on the acoustic matching of a lithium-niobate transducer to paratellurite using the method of galvanic deposition of an intermediate tin layer. A thin heat-conducting liquid layer between the heat sink and PET is used to remove heat from the PET without acoustic damping. A broadband highly efficient deflector with a center frequency of ultrasound of 37 MHz, a frequency band of more than 30 MHz, and a diffraction efficiency of more than 90% at a wavelength of 1.06 μm was created. A stable continuous operating mode of the deflector at acoustic-wave intensities of more than 20 W/cm2 has been achieved.
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This study was supported by budget financing within the framework of the State Job no. 0030-2019-0014.
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Translated by A. Seferov
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Antonov, S.N. The Underlying Technology of a Broadband Highly Efficient Acousto-Optic Cell (Deflector) on the Basis of a Paratellurite Crystal. Instrum Exp Tech 62, 823–829 (2019). https://doi.org/10.1134/S0020441219060010
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DOI: https://doi.org/10.1134/S0020441219060010