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Coherent backscattering, phase conjugation, and waveguide in photovoltaic media

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Abstract

We studied the coherent backscattering for a converging beam in typical photovoltaic media, LiNbO3:Fe crystals and paid special attention to the complicated interaction among the incident light, changed scattering centers, and nonlinearity of the crystal. By controlling the interaction, we changed the temporally fluctuant backscattering speckles with random phases to be one phase conjugate wave of the incident light; meanwhile the random scattering centers could be self-arranged into order. And at the same time, a waveguide was formed in the sample.

© 2005 Optical Society of America

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