6 research outputs found

    Observation of the photorefractive effect in a polymer

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    We report the first observation of the photorefractive effect in a polymeric material, the electro-optic polymer bisphenol-A-diglycidylether 4-nitro-1,2-phenylenediamine made photoconductive by doping with the hole-transport agent diethylamino-benzaldehyde diphenylhydrazone. The gratings formed exhibit dynamic writing and erasure, strong electric-field dependence, polarization anisotropy, and estimated space-charge fields up to 26 kV/cm at an applied field of 126 kV/cm. Application of similar concepts should provide a broad new class of easily fabricated photorefractive materials

    Photostability enhancement of an azobenzene photonic polymer

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    International audienceWe have found that the presence of a methacrylate group on an azobenzene electro-optic chromophore can provide an enhancement in photostability of up to one or two orders of magnitude. Systematic studies involving the change in chromophore structure and atmospheric environmentindicate that the photostabilization is due to antioxidant action by the unsaturated functional grou

    Nonlinear Optical Polymeric Materials: From Chromophore Design to Commercial Applications

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    Canada

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