Detection of small phase modulation using two-wave mixing in photorefractive crystals

被引：0

作者：

N.I. Nazhestkina

A.A. Kamshilin

O.V. Kobozev

V.V. Prokofiev

T. Jääskeläinen

机构：

[1] Department of Physics,

[2] University of Joensuu,undefined

[3] P.O. Box 111,undefined

[4] 80101 Joensuu,undefined

[5] Finland,undefined

来源：

Applied Physics B | 2001年 / 72卷

关键词：

PACS: 42.65.H; 42.70.N; 42.30.M;

D O I：

暂无

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学科分类号：

摘要：

Two-wave mixing of phase-modulated beams in photorefractive crystals under a dc electric field is studied both theoretically and experimentally. Based on the vectorial theory of light diffraction in crystals of cubic symmetry, we derived an analytical expression that describes the phase demodulation in crystals with an arbitrarily oriented electric field. The phase-demodulation technique was used for estimation of the space-charge field created in photorefractive crystals. It is shown that the space-charge-field grating created in GaP and Bi12TiO20 crystals is much smaller than that predicted from the one-level band-transport model of the photorefractive effect.

引用

页码：767 / 773

页数：6