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Optical Engineering

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

Paper Details

Date Published: 1 July 1996
PDF: 8 pages
Opt. Eng. 35(7) doi: 10.1117/1.600775
Published in: Optical Engineering Volume 35, Issue 7
Show Author Affiliations
Feng Zhao, Accuwave Corp. (United States)
Hanying Zhou, 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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