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Proceedings Paper

Holographic characterization of photochromic-doped-polymer films for holographic memories
Author(s): Roger A. Lessard; Fatima Ghailane; Gurusamy Manivannan
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Paper Abstract

The photoinduced reversible color change between thermally stable and meta stable states of spiropyran molecules can modulate the absorption and the refractive index of the photochromic doped poly(vinylcarbazole) films. The effect of the exposure energy and the film thickness on the real-time diffraction efficiency was investigated. The optimal thickness for which the maximum diffraction efficiency is obtained was found to be around 30 micrometers for an exposure energy greater than 1005 mJ/cm2. High efficiency erasable holographic recording at 350 nm was performed. A maximum diffraction efficiency of 13% was achieved for spiropyran doped poly(vinylcarbazole) films.

Paper Details

Date Published: 22 April 1996
PDF: 7 pages
Proc. SPIE 2688, Holographic Materials II, (22 April 1996); doi: 10.1117/12.238547
Show Author Affiliations
Roger A. Lessard, Univ. Laval (Canada)
Fatima Ghailane, Univ. Laval (Canada)
Gurusamy Manivannan, Univ. Laval (Canada)


Published in SPIE Proceedings Vol. 2688:
Holographic Materials II
T. John Trout, Editor(s)

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