Temperature dependence of light-induced scattering in a Ce:Fe:LiNbO3 photorefractive crystal

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

doi:10.1117/1.600775

1 July 1996 Temperature dependence of light-induced scattering in a Ce:Fe:LiNbO3 photorefractive crystal

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

Optical Engineering, Vol. 35, Issue 7, (July 1996). https://doi.org/10.1117/1.600775

Light-induced scattering in a Ce:Fe:LiNbO3 crystal is highly temperature dependent. By considering the effect due to thermally activated ions in a photorefractive crystal, we have shown that the photoinduced space-charge field is neutralized by the activated ions. This neutralization in turn leads to a reduction of scattering noise in the crystal. By raising the crystal temperature, we have observed a reduction in scattering noise, which is consistent with our prediction. The signal-to-noise ratio (SNR) in a two-wave mixing amplification due to thermal activation effect is analyzed. Experimental demonstrations using a Ce:Fe:LiNbO3 crystal are provided in which we have shown that the SNR improves as the crystal temperature increases.

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Feng Zhao, Hanying Zhou, Zhongkong Wu, Francis T. S. Yu, and Deanna K. McMillen "Temperature dependence of light-induced scattering in a Ce:Fe:LiNbO3 photorefractive crystal," Optical Engineering 35(7), (1 July 1996). https://doi.org/10.1117/1.600775

Published: 1 July 1996

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