Rewritable optical data storage in azobenzene copolymers

We propose to encode optical information through the localized depoling of polar chromophores in thin films of grafted polymeric materials with a femtosecond near IR laser source. This disorientation is promoted through the photoisomerization of the azo-dye component induced by a twophoton absorptio...

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Bibliographic Details
Published inOptics express Vol. 14; no. 21; pp. 9896 - 9901
Main Authors Gindre, Denis, Boeglin, Alex, Fort, Alain, Mager, Loïc, Dorkenoo, Kokou D
Format Journal Article
LanguageEnglish
Published United States 16.10.2006
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Summary:We propose to encode optical information through the localized depoling of polar chromophores in thin films of grafted polymeric materials with a femtosecond near IR laser source. This disorientation is promoted through the photoisomerization of the azo-dye component induced by a twophoton absorption process. We show that the resulting localized loss in second harmonic generation efficiency can be exploited in data storage applications. The low irradiation powers used allow for a recycling by reheating and repoling the films leading to a rewritable system.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.14.009896