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Studies of the photoreduction of methylene blue in gelatin solutions and films with a view to improving the holographic recording process at 633 nm

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Abstract

The photoreduction of methylene blue (MB), in methylene blue sensitized gelatin (MBG) solutions and films, was studied for the first time with time-resolved laser spectroscopy. The dependence of the lifetime of the triplet state precursor was estimated by varying the pH, and the efficiency of this photoprocess was evaluated in solid thin films. This work constitutes the first step towards improving the holographic recording speed of MBG.

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Authors and Affiliations

  1. Department of Physics, Université Laval, COPL, G1K 7P4, Québec, Canada

    N. Capolla & R. A. Lessard

  2. Laboratorie de Photochimie Générale, École Nationale Supérieure de Chimie, F-68093, Mulhouse CEDEX, France

    C. Carré & D. J. Lougnot

Authors
  1. N. Capolla
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  2. R. A. Lessard
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  3. C. Carré
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  4. D. J. Lougnot
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Capolla, N., Lessard, R.A., Carré, C. et al. Studies of the photoreduction of methylene blue in gelatin solutions and films with a view to improving the holographic recording process at 633 nm. Appl. Phys. B 52, 326–330 (1991). https://doi.org/10.1007/BF00325490

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  • DOI: https://doi.org/10.1007/BF00325490

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