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Proceedings Paper

Three-dimensional optical memory using photopolymer, photorefractive crystals, and photochromic materials
Author(s): Satoshi Kawata; Akiko Toriumi
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Paper Abstract

To exceed the capacity limitation of the optical method of data storage, we record and read digital data in three dimension in photorefractive material which is photosensitive for recording and refractile in reading. Experimental results are shown with photopolymers, photorefractive ferroelectric crystals, and photochromic dyes. Thirty layers have been successfully recorded and read in 300 micrometers -thick photopolymer film. Optical systems, including a confocal laser-scanning system and a two-photon laser-scanning system, and photorefractive materials suitable for 3D data storage are discussed with current problems for commercial applications.

Paper Details

Date Published: 30 July 1997
PDF: 8 pages
Proc. SPIE 3109, Optical Data Storage 1997 Topical Meeting, (30 July 1997); doi: 10.1117/12.280679
Show Author Affiliations
Satoshi Kawata, Osaka Univ. (Japan)
Akiko Toriumi, Osaka Univ. (Japan)

Published in SPIE Proceedings Vol. 3109:
Optical Data Storage 1997 Topical Meeting
Henryk Birecki; James Z. Kwiecien, Editor(s)

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