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Author Machikhin, A. S. ♦ Pozhar, V. E.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ ANALYTICAL SOLUTION ♦ ANISOTROPY ♦ BIREFRINGENCE ♦ CRYSTALS ♦ DEFORMATION ♦ DIFFRACTION ♦ IMAGES ♦ INTERACTIONS ♦ LATTICE PARAMETERS ♦ PHOTON BEAMS ♦ ULTRASONIC WAVES
Abstract We consider the problem of determining the spatial and spectral image distortions arising from anisotropic diffraction by ultrasonic waves in crystals with ordinary polarised light (o → e). By neglecting the small-birefringence approximation, we obtain analytical solutions that describe the dependence of the diffraction angles and wave mismatch on the acousto-optic (AO) interaction geometry and crystal parameters. The formulas derived allow one to calculate and analyse the magnitude of diffraction-induced spatial and spectral image distortions and to identify the main types of distortions: chromatic compression and trapezoidal deformation. A comparison of the values of these distortions in the diffraction of ordinary and extraordinary polarised light shows that they are almost equal in magnitude and opposite in signs, so that consistent diffraction (o → e → o or e → o → e) in two identical AO cells rotated through 180° in the plane of diffraction can compensate for these distortions. (diffraction of radiation)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-02-28
Publisher Place United States
Journal Quantum Electronics
Volume Number 45
Issue Number 2


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