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Proceedings Paper

Organo-metallic thin films for erasable photochromatic laser discs
Author(s): Zhongyi Hua; G. R. Chen; Z. H. Wang
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Paper Abstract

A new category of erasable optical storage media, M1-(Beta) (TCNQ) films, is described. The photochromatic effect of thin organometallic charge-transfer complex can give high contrast patterns directly produced on the film by pulsed photon beams generated from a He-Ne tube or a semiconductor laser. The patterns are erasable by the same light source under different irradiating conditions. Typical experimental results were as follows: For (lambda) equals 632.8 nm, write-in power equals 16 mW, pulse duration equals 300 ns; erasing power equals 8 mW, pulse duration equals 25 microsecond(s) ; coefficient of contrast K > 50%; number of write- erase cycles N > 1000. For (lambda) equals 830.0 nm, write-in power equals 12 mW, pulse duration equals 650 ns; erasing power equals 4 mW, pulse duration equals 15 microsecond(s) ; K > 25%; N > 120.

Paper Details

Date Published: 1 November 1991
PDF: 6 pages
Proc. SPIE 1519, International Conference on Thin Film Physics and Applications, (1 November 1991); doi: 10.1117/12.47285
Show Author Affiliations
Zhongyi Hua, Fudan Univ. (China)
G. R. Chen, Fudan Univ. (China)
Z. H. Wang, Fudan Univ. (China)


Published in SPIE Proceedings Vol. 1519:
International Conference on Thin Film Physics and Applications

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