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Photorefractive Effects, Materials, and Devices

Simulation of a dynamic storage process

Matthias Esselbach, Gregor Cedilnik, Armin Kießling, Richard M. Kowarschik

Published Jan 1, 1999• 0 citations
Publisher

Abstract

The possibility of realizing an optical memory using dynamic refreshment via phase conjugation is discussed. The experimental realization is based on photorefractive barium titanate crystals. Series of refresh cycles are simulated numerically in dependence on several parameters. It is shown that an extension of the storage time can be reached.

DOI
10.1364/apmed.1999.ods6

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Journal of the Optical Society of America B•Feb 1, 1986•0 citations
The possibility of realizing an optical memory using dynamic refreshment via phase conjugation is discussed. The experimental realization is based on photorefractive barium titanate crystals. Series of refresh cycles are simulated numerically in dependence on several parameters. It is shown that an extension of the storage time can be reached.
We propose a dynamic refreshing technique in a photorefractive memory with double mutually pumped phase conjugate mirrors. Long-term continuous readout without any fixing technique can be achieved by the high quality image refreshing that uses the resonance of the phase conjugate beams with image information between phase conjugate mirrors. We perform the experiment on the long-term reading of the images in the photorefractive memory with BaTiO/sub 3/ crystals and achieve the continuous reading time over 10 times longer than the time constant of the crystal without image degradation.