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

Diffraction

Diffraction gratings

Four wave mixing

Ions

Phase conjugation

Scattering

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