Abstract
Organosilsesquioxane polymers doped with photochromic fulgide dye have been synthesized for use as model reversible holographic photosensitive media, combining high rigidity with the stability of the isomers of the photosensitive dye. The dye diffusion in the polymers, which affords the relaxation of the photo-induced holographic gratings with periods from hundreds to thousands of nanometers, has been studied. The diffusion coefficients have been measured by the method of holographic relaxometry. It is shown that the dye diffusion can be considerably slowed down by heat treatment of the photochromic material.
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