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Conference on Lasers and Electro-Optics

High Gain Coherent Image Amplification and Self-Pumped Phase Conjugation In KNb0 3 :Fe

He Zhang, Xue He, Erli Chen, Yue Liu, Shen De

Published Apr 24, 1989• 0 citations
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Chinese Physics Letters•Jan 1, 1999•2 citations
Stationary photorefractive self-pumped phase-conjugation with one four-wave-mixing interaction region, stimulated by the photorefractive amplified backward scattering, is obtained in LiNbO 3 :Fe crystals, in which the strong backward scattered light is gotten by putting a scattering particle on the backface of the sample. Even though its reflectivities are not high (its temporal and stationary reflectivities are 10% and 3%, respectively), due to the low electrooptic coefficients of LiNbO 3 :Fe crystals, our experimental results prove that this mechanism is effective and simple comparing with the "cat" self-pumped phase-conjugator.