Highly accurate computer modeling of light propagation in inhomogeneous, anisotropic medium for the acousto-optical phenomenon

G. Mihajlik, P. Maák, A. Barócsi, P. Richter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a novel numerical model that simulates the anisotropic Bragg diffraction in optically anisotropic (uniaxial) acousto-optical devices. We use a non-paraxial vectorial beam propagation method adapted to optically inhomogeneous medium and arbitrary optical field distribution. The principal idea of our solving method is that since the amplitude of the spatial variation of the refractive index caused by the acoustic wave is relatively small, we can consider it as a perturbation and iterate to the exact solution of the wave equation describing the propagation of the optical field distribution. To describe anisotropic diffraction with polarization rotation, we use a fully vectorial beam propagation method (BPM) where the accuracy depends on the relative step size. The results converge rapidly to fulfill energy conservation (up to 10-3 with less than an hour of computational time). We show that the calculated angles, the space dependent intensity and polarization variations of the diffracted beams agree accurately with those predicted by theory and experiment, under Bragg diffraction condition, in various acousto-optic configurations.

Original languageEnglish
Title of host publicationCIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - Smart Optics
PublisherTrans Tech Publications Ltd
Pages164-168
Number of pages5
ISBN (Print)9783908158127
DOIs
Publication statusPublished - Jan 1 2008
Event3rd International Conference on Smart Materials, Structures and Systems - Smart Optics, CIMTEC 2008 - Acireale, Sicily, Italy
Duration: Jun 8 2008Jun 13 2008

Publication series

NameCIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - Smart Optics
Volume55

Other

Other3rd International Conference on Smart Materials, Structures and Systems - Smart Optics, CIMTEC 2008
CountryItaly
CityAcireale, Sicily
Period6/8/086/13/08

Keywords

  • Acousto-optics
  • Optical anisotropy
  • Vector diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)

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    Mihajlik, G., Maák, P., Barócsi, A., & Richter, P. (2008). Highly accurate computer modeling of light propagation in inhomogeneous, anisotropic medium for the acousto-optical phenomenon. In CIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - Smart Optics (pp. 164-168). (CIMTEC 2008 - Proceedings of the 3rd International Conference on Smart Materials, Structures and Systems - Smart Optics; Vol. 55). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AST.55.164