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Parametric amplification of a coherent light wave in photorefractive BaTiO3 by a single pump beam

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Abstract

We demonstrate a new method of light amplification based on forward four-wave mixing in photorefractive BaTiO 3. A single pump beam of combined (ordinary and extraordinary) polarization can be used for an efficient cw amplification of a signal wave with slightly shifted temporal frequency. A signal wave with an initial power of less than 1 nW is amplified 100 times in a 3.2-mm-thick sample.

© 1997 Optical Society of America

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