Collinear and quasi-collinear acousto-optical diffraction: basic equations and two-crystal tunable devices

Vladimir G. Zakharov; Vladimir N. Parygin

doi:10.1117/12.257377

8 November 1996 Collinear and quasi-collinear acousto-optical diffraction: basic equations and two-crystal tunable devices

Vladimir G. Zakharov, Vladimir N. Parygin

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Proceedings Volume 2965, ALT '96 International Symposium on Laser Methods for Biomedical Applications; (1996) https://doi.org/10.1117/12.257377
Event: ALT '96 International Symposium: Laser Methods for Biomedical Applications, 1996, Heraklion, Crete, Greece

Abstract

An approximate solution of the equations governing collinear acousto-optical interaction in terms of confluent hyper- geometric function is obtained under conditions of plane- wave approximation. However, the experimental acousto- optical devices deal with a beam of finite dimensions which imply a substantial transversal and longitudinal inhomogeneity altering considerably the results of diffraction. A theory of such quasi-collinear interaction is suggested. An acousto-optical tunable filter is one of most promising devices using acousto-optical diffraction and able to ensure high-resolution spectral analysis of natural optical radiations could further be improved if two instead of one consequently arranged crystals were used in the acousto-optical cell.

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Vladimir G. Zakharov and Vladimir N. Parygin "Collinear and quasi-collinear acousto-optical diffraction: basic equations and two-crystal tunable devices", Proc. SPIE 2965, ALT '96 International Symposium on Laser Methods for Biomedical Applications, (8 November 1996); https://doi.org/10.1117/12.257377

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KEYWORDS

Crystals

Acoustics

Diffraction

Solids

Transducers

Light wave propagation

Beam propagation method

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