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Proceedings Paper

Characterization of dye-doped polymer films as recording materials
Author(s): Christophe Lafond; Amir Tork; Roger A. Lessard; Michel Bolte
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Paper Abstract

By means of real-time holographic recording, two important classes of photochromic compounds (spiropyrans and fulgides) have been characterized. For spiropyran molecules, important thickness and writing intensity effects were observed. Concerning fulgides molecules, photochemical fatigue resistance in different polymer hosts was investigated. After 10 irradiation cycles, the closed form lost 9, 1 1 , 13 and 35% of its initial absorbance respectively in PS, CA, PMMA and PVK. For the holographic study, diffraction efficiency in fulgide doped PMMA films was strongly dependent on the writing intensity: the rise time 'r takes values 25and 7s for respectively 2 and 8 mW/cm2. Optimum fulgide concentration and writing exposure have been obtained: diffraction efficiency is maximum with a concentration of 2% and an intensity of 4mW/cm2. Keywords:Photochromism, photosensitive materials, fulgides, spiropyrans, polymethylmetacrylate, polyvinylcarbazole, real-time spectrometry, photochemical fatigue resistance, holographic recording.

Paper Details

Date Published: 15 December 2000
PDF: 9 pages
Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000); doi: 10.1117/12.406303
Show Author Affiliations
Christophe Lafond, Univ. Laval and Univ. Blaise Pascal (Canada)
Amir Tork, Univ. Laval (Canada)
Roger A. Lessard, Univ. Laval (Canada)
Michel Bolte, Univ. Blaise Pascal (France)


Published in SPIE Proceedings Vol. 4087:
Applications of Photonic Technology 4
Roger A. Lessard; George A. Lampropoulos, Editor(s)

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