Optical Associative Memory Using LiNbO 3 :Fe Hologram

Experimental investigation is presented on an all-optical associative holographic memory with storage of more than one image using an iron-doped lithium niobate single crystal in which memories can be written, erased and rewritten without developing treatment. Several images are multiply stored in t...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1991-09, Vol.30 (9S), p.2359
Main Authors: Tanaka, Yukio, Chen, Zhiming, Tadashi Kasamatsu, Tadashi Kasamatsu, Tadashi Shiosaki, Tadashi Shiosaki
Format: Article
Language:English
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Summary:Experimental investigation is presented on an all-optical associative holographic memory with storage of more than one image using an iron-doped lithium niobate single crystal in which memories can be written, erased and rewritten without developing treatment. Several images are multiply stored in the single crystal volume hologram by sequentially changing their own corresponding reference beams. Then using an image input, an output image is read out. This output image most closely resembles the input image. Threshold processing due to the sublinear photorefractive effect in the crystal is used to single out a distinct diffracted beam from the hologram.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.30.2359