1 July 1995 All-optical associative memory using photorefractive crystals and a saturable absorber
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Optical Engineering, 34(7), (1995). doi:10.1117/12.204796
Abstract
We report on the investigation of a new configuration of an all-optical associative memory. The images to be recalled associatively are stored in a LiNbO3 crystal via angular multiplexing. Thresholding of the reconstructed reference beams during associative readout is achieved by using a saturable absorber with an intensity-tunable threshold. We demonstrate associative readout and error correction for 10 strongly overlapping black-and-white images. Associative recall and full reconstruction is performed when only 1/500 of the image stored is entered.
Markus Duelli, Roger S. Cudney, Claudia Keller, Peter Guenter, "All-optical associative memory using photorefractive crystals and a saturable absorber," Optical Engineering 34(7), (1 July 1995). http://dx.doi.org/10.1117/12.204796
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KEYWORDS
Crystals

Holograms

Content addressable memory

Diffraction

Ultraviolet radiation

Laser crystals

Phase conjugation

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