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Proceedings Paper

Three-dimensional confocal optical memory using photorefractive materials
Author(s): Satoshi Kawata; Tomokazu A. Tanaka; Yasuaki Hashimoto; Y. Kawata
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Paper Abstract

Research on 3-D optical memory with photorefractive materials is described for ultra-high density/capacity memory exceeding the classical limit of conventional optical memory. In this system bit data are recorded by a focused laser beam as refractive digital bits in 3-D volume. A confocal laser-scan microscope is used for reading the recorded bit-data. In this paper, we show the system and the methods for writing and reading data, the materials we used, and some devices for practically realizing this type of memory. Some experimental examples obtained through the preliminary experiments are shown and the problems to be solved in future research and development are discussed.

Paper Details

Date Published: 20 January 1994
PDF: 12 pages
Proc. SPIE 2042, Photopolymers and Applications in Holography, Optical Data Storage, Optical Sensors, and Interconnects, (20 January 1994); doi: 10.1117/12.166310
Show Author Affiliations
Satoshi Kawata, Osaka Univ. (Japan)
Tomokazu A. Tanaka, Osaka Univ. (Japan)
Yasuaki Hashimoto, Osaka Univ. (Japan)
Y. Kawata, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 2042:
Photopolymers and Applications in Holography, Optical Data Storage, Optical Sensors, and Interconnects

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