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Theory of Two-Species Transport in Photorefractive Crystals Using Two Wavelengths for Nondestructive Readout

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Abstract

Holographic storage offers many advantages over conventional storage methods, however, readout of information cannot be made non-destructive without special fixing procedures, such as thermal and electrical fixing. Several other techniques enabling non-destructive readout of information have been investigated, including two-photon recording in singe species crystals[1], and sensitizing with a short wavelength and recording and reading with a long wavelength with two species[2,3]. The last method has the advantage of allowing each species to be chosen, so that the photorefractive properties can be optimized while retaining the information during readout.

© 1996 Optical Society of America

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