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:10.1117/12.217024

18 August 1995 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

Proceedings Volume 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications; (1995) https://doi.org/10.1117/12.217024
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

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 photo-induced space-charge field is neutralized by the activated ions. This neutralization in turn leads to scattering noise reduction 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.

Citation Download Citation

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", Proc. SPIE 2529, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications, (18 August 1995); https://doi.org/10.1117/12.217024

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