Double phase-conjugate mirror: analysis, demonstration, and applications
- 1 February 1987
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 12 (2), 114-116
- https://doi.org/10.1364/ol.12.000114
Abstract
We report on the operation of the double phase-conjugate mirror (DPCM). Two inputs to opposite sides of a photorefractive barium titanate crystal, which may carry different spatial images, are shown to pump the same four-wave mixing process mutually and are self-refracted without any external or internal crystal surface. This results in the phase-conjugate reproduction of the two images simultaneously. This device is analyzed theoretically, and applications in image processing, interferometry, and rotation sensing are discussed. We also demonstrate the operation of a ring laser, using the DPCM, as well as a photorefractive resonator with two facing DPCM’s that can support spatial information in its oscillations.Keywords
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