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Proceedings Paper

Finite element modeling of acousto-optic effect and optimization of the figure of merit
Author(s): Robert McIntosh; Amar S. Bhalla; Ruyan Guo
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Paper Abstract

A study of the acousto-optic (AO) effect in a family of oxide crystals (including e.g., TiO2, ZnO, LiNbO3, and ferroelectric perovskites) as well as semiconductors has been conducted by finite element analysis method. In addition, the acousto-optic figure of merit (FOM) as a function of material's refractive index, density, effective AO coefficient and the velocity of the acoustic wave in the material, is also investigated. By examining the directional dependent velocity, acousto-optic coefficients, and refractive index, the acousto-optic FOM can be calculated and plotted in all directions revealing the optimal crystal orientation to maximize coupling between the optical and acoustic waves. A finite element model was developed to corroborate the predicted interaction. The model examines the diffraction that occurs by the optical wave as it travels through an acousto-optic medium. The combined information gained from Mathematica and COMSOL Multiphysics-based modeling is shown to be an effective means of predicating acousto-optic device functionality.

Paper Details

Date Published: 15 October 2012
PDF: 11 pages
Proc. SPIE 8497, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI, 849703 (15 October 2012); doi: 10.1117/12.956441
Show Author Affiliations
Robert McIntosh, The Univ. of Texas at San Antonio (United States)
Amar S. Bhalla, The Univ. of Texas at San Antonio (United States)
Ruyan Guo, The Univ. of Texas at San Antonio (United States)


Published in SPIE Proceedings Vol. 8497:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI
Shizhuo Yin; Ruyan Guo, Editor(s)

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