Acousto-optic spatial frequency filter operating in the intermediate region of acousto-optic interaction

Kotov, V.M., Averin, S.V., Karachevtseva, M.V., Yaremenko, N.G.

Publication in Journal of Optical Technology

For Russian citation (Opticheskii Zhurnal):

Котов В.М., Аверин С.В., Карачевцева М.В., Яременко Н.Г. Акустооптический фильтр пространственных частот, оперирующий в промежуточной области акустооптического взаимодействия // Оптический журнал. 2022. Т. 89. № 1. С. 54–62. http://doi.org/10.17586/1023-5086-2022-89-01-54-62

Kotov V.M., Averin S.V., Karachevtseva M.V., Yaremenko N.G. Acousto-optic spatial frequency filter operating in the intermediate region of acousto-optic interaction [in Russian] // Opticheskii Zhurnal. 2022. V. 89. № 1. P. 54–62. http://doi.org/10.17586/1023-5086-2022-89-01-54-62

For citation (Journal of Optical Technology):

V. M. Kotov, S. V. Averin, M. V. Karachevzeva, and N. G. Yaremenko, "Acousto-optic spatial frequency filter operating in the intermediate region of acousto-optic interaction," Journal of Optical Technology. 89(1), 38-43 (2022). https://doi.org/10.1364/JOT.89.000038

Abstract:

The characteristics of an acousto-optic spatial frequency filter designed for processing of two-dimensional images and operation in the intermediate region of acousto-optic diffraction are investigated. The advantage of such filters over filters operating in a Bragg regime is the possibility of operation at significantly lower acoustic frequencies, which allows the passband of spatial frequencies to be increased and the limiting resolution to be decreased. Transfer functions of diffraction orders are obtained. The use of the first diffraction order is demonstrated to allow selection of the two-dimensional image contour. The two-dimensional image edge enhancement of the image transmitted by optical emission at a wavelength of 0.63×10⁻⁴cm is experimentally demonstrated using a TeO₂ spatial filter operating at a frequency of 15 MHz.

Keywords:

acousto-optic diffraction, intermediate regime, selection of two-dimensional image contour

OCIS codes: 070.1060, 070.2615, 070.6110

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