Temperature dependence of steady-state Bragg diffraction in a Ce:Fe:LiNbO<sub>3</sub> photorefractive crystal

Feng Zhao; Zhongkong Wu; Francis T. S. Yu; Deanna K. McMillen

doi:10.1117/12.211522

1 August 1995 Temperature dependence of steady-state Bragg diffraction in a Ce:Fe:LiNbO₃ photorefractive crystal

Feng Zhao, Zhongkong Wu, Francis T. S. Yu, Deanna K. McMillen

Author Affiliations +

Optical Engineering, Vol. 34, Issue 8, (August 1995). https://doi.org/10.1117/12.211522

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.

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Feng Zhao, Zhongkong Wu, Francis T. S. Yu, and Deanna K. McMillen "Temperature dependence of steady-state Bragg diffraction in a Ce:Fe:LiNbO₃ photorefractive crystal," Optical Engineering 34(8), (1 August 1995). https://doi.org/10.1117/12.211522

Published: 1 August 1995

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