Abstract
We report on the operation of the double phase conjugate mirror (DPCM).1 Two inputs to opposite sides of a photorefractive BaTiO3 crystal, which may be derived from separate lasers and may carry different spatial images, are shown to mutually pump a four-wave mixing process, resulting in full phase conjugate reproduction of the two Images simultaneously. In this device, each input supplies the energy which forms the phase conjugate of the other input.
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