Influence of distance between sections of phased ultrasound transducer on the number of resolved elements of acousto-optic deflector

For Russian citation (Opticheskii Zhurnal):

Никитин П.А. Влияние расстояния между секциями фазированного излучателя ультразвука на число разрешённых элементов акустооптического дефлектора // Оптический журнал. 2025. Т. 92. № 2. С. 16–24. http://doi.org/10.17586/1023-5086-2025-92-02-16-24

Nikitin P.A. Influence of distance between sections of phased ultrasound transducer on the number of resolved elements of acousto-optic deflector [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 2. P. 16–24. http://doi.org/10.17586/1023-5086-2025-92-02-16-24

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Acousto-optic deflector based on an optically isotropic medium using a sectioned phased ultrasound transducer. Aim of study. Determination of the optimum gap between ultrasound transducer sections to realize an effective terahertz radiation deflector. Method. Numerical modeling of acousto-optic interaction under the low diffraction efficiency approximation. Main results. The effect of the section gap and the number of sections of the ultrasound transducer on the number of resolved elements decreases with increasing number of sections and does not exceed 10%. Practical significance. The determining criterion for selecting the optimal gap between ultrasound transducer sections for an acousto-optic deflector is the diffraction efficiency and angular separation of radiation beams at the output of the device.

Keywords:

acousto-optic interaction, diffraction, acoustic field, sectioned transducer

Acknowledgements:

the work was funded by the Ministry of Science and Higher Education of the Russian Federation under State contract № FFNS-2022-0009 and was performed using the equipment of the Center for Collective Use of the Scientific and Technological Center of Unique Instrumentation of the Russian Academy of Sciences (STC UI RAS)/

OCIS codes: 050.1940, 070.1060, 170.7170, 260.3090

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