Peculiarities of the acousto-optical field formed during diffraction of dual-mode radiation in uniaxial crystals

Kotov, V.M., Averin, S.V., Kuznetsov, P.I., Kotov, E.V.

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For Russian citation (Opticheskii Zhurnal):

Котов В.М., Аверин С.В., Кузнецов П.И., Котов Е.В. Особенности распределения оптического поля, формируемого в процессе дифракции двухмодового излучения в одноосных кристаллах // Оптический журнал. 2018. Т. 85. № 1. С. 34–40. http://doi.org/10.17586/1023-5086-2018-85-01-34-40

Kotov V.M., Averin S.V., Kuznetsov P.I., Kotov E.V. Peculiarities of the acousto-optical field formed during diffraction of dual-mode radiation in uniaxial crystals [in Russian] // Opticheskii Zhurnal. 2018. V. 85. № 1. P. 34–40. http://doi.org/10.17586/1023-5086-2018-85-01-34-40

For citation (Journal of Optical Technology):

V. M. Kotov, S. V. Averin, P. I. Kusnetsov, and E. V. Kotov, "Peculiarities of the acousto-optical field formed during diffraction of dual-mode radiation in uniaxial crystals," Journal of Optical Technology. 85(1), 26-31 (2018). https://doi.org/10.1364/JOT.85.000026

Abstract:

This paper discusses acousto-optic Bragg diffraction in uniaxial crystals when two intrinsic optical modes of the crystal participate in the diffraction. The calculations are based on two crystals widely used in acousto-optics: lithium niobate and paratellurite. It is shown that the character of the acousto-optical field formed in the diffraction orders when optical rays propagate close to the optic axis while a sound wave propagates orthogonally to the optic axis makes it possible to use the resulting field for two-dimensional processing of optical images. The image can be filtered in this case by using both the zeroth and the first diffraction orders. Acousto-optic filters are fabricated from a paratellurite crystal and are used to experimentally show that a two-dimensional contour is discriminated when the image is subjected to optical Fourier processing (fast Fourier transform), using the zeroth and first Bragg orders.

Keywords:

acousto-optic diffraction, Bragg order, discrimination of optical image two-dimensional contour

Acknowledgements:

The research was partially supported by the Russian Foundation for Basic Research (RFBR) (15-07-02312, 16-07-00064).

OCIS codes: 070.1060: 070.2615: 070.6110

References:

1. B. G. Boone, Signal Processing Using Optics: Fundamentals, Devices, Architectures, and Applications (Oxford University, New York, 1998).
2. V. M. Kotov, G. N. Shkerdin, D. G. Shkerdin, A. I. Voronko, S. A. Tikhomirov, J. Stiens, R. Vounckx, and V. Vandermeiren, “Fourier processing of the speckle structure of the optical field formed in the process of multiphonon Bragg diffraction,” J. Opt. Technol. 74(2), 84–86 (2007) [Opt. Zh. 24(2), 12–15 (2007)].
3. R. A. Athale, J. van der Gracht, D. W. Prather, and J. N. Mait, “Incoherent optical image processing with acousto-optic pupil-plane filtering,” Appl. Opt. 34(2), 276–280 (1995).
4. V. M. Kotov, G. N. Shkerdin, D. G. Shkerdin, and E. V. Kotov, “Image contouring in diffraction orders in the process of acousto-optic interaction,” Radiotekh. Elektron. 54(6), 747–749 (2009).
5. V. I. Balakshy, V. B. Voloshinov, T. M. Babkina, and D. E. Kostyuk, “Optical image processing by means of acousto-optic spatial filtration,” J. Mod. Opt. 52(1), 1–20 (2005).
6. V. I. Balakshiı˘, “Influence of the divergence of a light beam on the characteristics of collinear diffraction,” Opt. Spectrosc. 103(5), 804–810 (2007) [Opt. Spektrosk. 103(5), 831–837 (2007)].
7. V. I. Balakshy and D. E. Kostyuk, “Acousto-optic image processing,” Appl. Opt. 48(7), C24–C32 (2009).
8. V. I. Balakshiı˘, V. N. Parygin, and L. E. Chirkov, Physical Principals of Acousto-optics (Radio i Svyaz’, Moscow, 1985).
9. V. M. Kotov, Acousto-optics: Bragg Diffraction of Multicolor Radiation (Yanus-K, Moscow, 2016).
10. L. N. Magdich and V. Ya. Molchanov, Acousto-optic Devices and Their Use (Sov. Radio, Moscow, 1978).
11. V. Yu. Rakovskiı˘ and A. S. Shcherbakov, “Multiphonon Bragg scattering of light by acoustic waves,” Sov. Phys. Tech. Phys. 35(7), 815 (1990) [Zh. Tekh. Fiz. 60(7), 107–114 (1990)].
12. M. Born and E. Wolf, Principles of Optics: Electromagnetic Theory of Propagation, Interference, and Diffraction of Light (Pergamon Press, Oxford, 1970; Nauka, Moscow, 1973).
13. M. P. Shaskol’skaya, ed., Acoustic Crystals (Nauka, Moscow, 1982).
14. D. V. Sivukhin, General Course of Physics, Vol. 4: Optics (Fizmatlit MFTI, Moscow, 2002).
15. V. B. Voloshinov, V. N. Parygin, and L. E. Chirkov, “Some features of the anisotropy of Bragg diffraction,” Vestn. Mosk. Gos. Univ. Ser. 3 Fiz., Astr. 17(3), 305–312 (1976).