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

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...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2001-05, Vol.72 (6), p.767-773
Main Authors: Nazhestkina, N.I., Kamshilin, A.A., Kobozev, O.V., Prokofiev, V.V., Jääskeläinen, T.
Format: Article
Language:English
Subjects:
Beams (radiation)
Crystal structure
Crystals
Electric fields
Exact solutions
Mathematical analysis
Mathematical models
Two-wave mixing
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0946-2171
1432-0649
DOI:10.1007/s003400100583