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Optical Engineering • Open Access

Uniformity of image amplification by two-wave mixing in photorefractive crystals
Author(s): Danyu Chen; Fengchun Tian; Youwen Hu; Ying Liu; Liang Han

Paper Abstract

A model of two-wave mixing in the photorefractive crystal, which takes account of the difference in spatial frequency in a beam, has been built to study the uniformity of image amplification. Based on the theoretical analysis of the model, the gain distribution for each pixel in the signal beam has been obtained. It shows that the unevenness of the gain is induced by the difference in spatial frequency in the beam. The factors that impact on the uniformity of image amplification have been analyzed. As an example, the effects of these factors in a given photorefractive crystal have been studied through simulation.

Paper Details

Date Published: 21 March 2014
PDF: 8 pages
Opt. Eng. 53(3) 033106 doi: 10.1117/1.OE.53.3.033106
Published in: Optical Engineering Volume 53, Issue 3
Show Author Affiliations
Danyu Chen, Chongqing Univ. (China)
Fengchun Tian, Chongqing Univ. (China)
Youwen Hu, Chongqing Univ. (China)
Ying Liu, Chongqing Univ. (China)
Liang Han, Chongqing Univ. (China)

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