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Optical Engineering

Two-wave mixing and fanning effect in Bi12TiO20 under an alternating electric field
Author(s): Hemmo Tuovinen; Alexei A. Kamshilin; Risto Ravattinen; Victor V. Prokofiev; Timo Jaeaeskelaeinen
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Paper Abstract

Numerical calculation of the two-wave mixing gain factor for arbitrary orientation of the holographic grating vector using the coupled wave theory developed for optically active electro-optic crystal enabling pump-beam depletion is presented. Two-dimensional angular dependencies of the gain factor are measured in Bi12TiO20 photorefractive crystal under an alternating external electric field using the fanning effect. It is found experimentally that the angular ditribution of fanning light is independent of the polarization state of the pump beam. This fact could not be explained by the existing theory.

Paper Details

Date Published: 1 September 1995
PDF: 7 pages
Opt. Eng. 34(9) doi: 10.1117/12.208096
Published in: Optical Engineering Volume 34, Issue 9
Show Author Affiliations
Hemmo Tuovinen, Univ. of Joensuu (Finland)
Alexei A. Kamshilin, Univ. of Joensuu (Finland)
Risto Ravattinen, Univ. of Joensuu (Finland)
Victor V. Prokofiev, Univ. of Joensuu (Finland)
Timo Jaeaeskelaeinen, Univ. of Joensuu (Finland)


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