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Proceedings Paper

A Ulexite-based animation recording system by random reference patterns
Author(s): Yuko Ishii; Misako Irisawa; Yoshihisa Takayama; Eriko Watanabe; Kashiko Kodate
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Paper Abstract

We propose a simple, compact and high-security holographic optical memory system using Ulexite in order to produce random patterns of reference beam. 100 hologram multiplexing was achieved by multiplexing exposure, rotating Ulexite by 0.2 degrees every time with LiNbO3 crystal as a recording medium. Moreover, with this system, animation readout images can play for approximately 8 seconds by continuous rotation of Ulexite. As a natural stone, the exactly same Ulexite is very difficult to be found or replicated. Basic experimental results show that Ulexite can be used as a security key for its image-reproducibility and BER calculations.

Paper Details

Date Published: 27 February 2006
PDF: 9 pages
Proc. SPIE 6136, Practical Holography XX: Materials and Applications, 61360N (27 February 2006); doi: 10.1117/12.650852
Show Author Affiliations
Yuko Ishii, Japan Women's Univ. (Japan)
Misako Irisawa, Japan Women's Univ. (Japan)
Yoshihisa Takayama, Japan Aerospace Exploration Agency (Japan)
Eriko Watanabe, Japan Women's Univ. (Japan)
Kashiko Kodate, Japan Women's Univ. (Japan)

Published in SPIE Proceedings Vol. 6136:
Practical Holography XX: Materials and Applications
Hans I. Bjelkhagen; Roger A. Lessard, Editor(s)

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