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Optical Engineering

Temperature dependence of steady-state Bragg diffraction in a Ce:Fe:LiNbO3 photorefractive crystal
Author(s): Feng Zhao; Zhongkong Wu; Francis T. S. Yu; Deanna K. McMillen
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Paper Abstract

Steady-state Bragg diffraction (nondegenerate four-wave mixing) in a Ce:Fe:LiNbO3 photorefractive crystal as a function of the crystal temperature is described. We have shown that an efficient steady-state frequency-varied conjugate wave (FVCW) can be generated at an elevated crystal temperature of about 120°C, at which a tenfold increase in the steady-state FVCW intensity is observed compared with that at room temperature (20°C). We have found that the temperature dependency is primarily due to the reduction of light-induced scattering by thermally activated ions that neutralize the noise grating in the crystal. We have also observed that, at higher temperatures, steady-state phase-conjugate waves at both pump wavelengths can be obtained.

Paper Details

Date Published: 1 August 1995
PDF: 5 pages
Opt. Eng. 34(8) doi: 10.1117/12.211522
Published in: Optical Engineering Volume 34, Issue 8
Show Author Affiliations
Feng Zhao, Jet Propulsion Lab (United States)
Zhongkong Wu, The Pennsylvania State Univ. (United States)
Francis T. S. Yu, The Pennsylvania State Univ. (United States)
Deanna K. McMillen, U.S. Army Missile Command (United States)

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