{"title":"Studying the Frequency Range of Operation of a Piezoelectric Transducer of an Acousto-Optic Filter by Electric and Optical Methods","authors":"N. V. Polikarpova, V. E. Pozhar","doi":"10.1134/s1063771023601218","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The acousto-optic characteristics of a paratellurite crystal with a cut angle of α = 10.2° have been investigated theoretically and experimentally. The crystal is used in an acousto-optic filter for processing optical images in visible and infrared light. The electric range of filter tuning has been experimentally determined based on the frequency dependence of the power absorbed by the piezoelectric transducer of the filter. Estimates of the range of filter tuning with respect to optical wavelengths are made. At light wavelengths of λ = 1.15 µm and λ = 0.63 µm, the dependences of the Bragg angle of incidence on the ultrasound frequency are calculated. When measuring the diffraction efficiency in the deflector operation mode, it was found that the range of filter tuning in optical wavelengths turns out to be different from that predicted as a result of measuring the electrical characteristics of the transducer and becomes narrower.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustical Physics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s1063771023601218","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ACOUSTICS","Score":null,"Total":0}
引用次数: 0
Abstract
The acousto-optic characteristics of a paratellurite crystal with a cut angle of α = 10.2° have been investigated theoretically and experimentally. The crystal is used in an acousto-optic filter for processing optical images in visible and infrared light. The electric range of filter tuning has been experimentally determined based on the frequency dependence of the power absorbed by the piezoelectric transducer of the filter. Estimates of the range of filter tuning with respect to optical wavelengths are made. At light wavelengths of λ = 1.15 µm and λ = 0.63 µm, the dependences of the Bragg angle of incidence on the ultrasound frequency are calculated. When measuring the diffraction efficiency in the deflector operation mode, it was found that the range of filter tuning in optical wavelengths turns out to be different from that predicted as a result of measuring the electrical characteristics of the transducer and becomes narrower.
期刊介绍：
Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.
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