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Conference Paper
Photorefractive Effects, Materials, and Devices
La Colle sur Loup France
June 17, 2003
ISBN: 1-55752-755-5
Application: Adaptive Interferometry (AAI)

Polarization degree of freedomin photorefractive two-wave coupling

Alexei A. Kamshilin, Erik Raita, and Alexander I. Grachev

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Coupling of two waves with different polarization states in a photorefractive crystal of cubic symmetry is discussed. We show that a proper choice of the polarization states allows linear transformation of small transient phase shift between the coupled waves into intensity modulation of the transmitted light even in the case when the space-charge field is formed using the diffusion-type mechanism. Comparison of the proposed phase-demodulation technique with known adaptive interferometers is given considering the sensitivity and the response time. The proposed technique is very promising for laser-ultrasound receivers since it allows design adaptive interferometers possessing the best combination of the sensitivity and adaptability.

© 2003 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(190.7070) Nonlinear optics : Two-wave mixing

A. A. Kamshilin, E. Raita, and A. I. Grachev, "Polarization degree of freedomin photorefractive two-wave coupling," in Photorefractive Effects, Materials, and Devices, P. Delaye, C. Denz, L. Mager, and G. Montemezzani, eds., Vol. 87 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 476.

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