The Underlying Technology of a Broadband Highly Efficient Acousto-Optic Cell (Deflector) on the Basis of a Paratellurite Crystal

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 inter...

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Bibliographic Details
Published in:Instruments and experimental techniques (New York) 2019-11, Vol.62 (6), p.823-829
Main Author: Antonov, S. N.
Format: Article
Language:English
Subjects:
Acoustics
Acousto-optics
Broadband
Damping
Diffraction efficiency
Electrical Engineering
Frequencies
General Experimental Techniques
Heat sinks
Heat transmission
Lithium niobates
Measurement Science and Instrumentation
Physical Chemistry
Physics
Physics and Astronomy
Piezoelectricity
Tellurium dioxide
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Summary: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/cm 2 has been achieved.
ISSN:0020-4412
1608-3180
DOI:10.1134/S0020441219060010