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15 December 2000 Characterization of dye-doped polymer films as recording materials
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Proceedings Volume 4087, Applications of Photonic Technology 4; (2000)
Event: 2000 International Conference on Application of Photonic Technology (ICAPT 2000), 2000, Quebec City, Canada
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.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christophe Lafond, Amir Tork, Roger A. Lessard, and Michel Bolte "Characterization of dye-doped polymer films as recording materials", Proc. SPIE 4087, Applications of Photonic Technology 4, (15 December 2000);


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