Synthesis and characterization of novel photorefractive low molecular weight glasses

Christoph Hohle; Peter Strohriegl; Stefan Schloter; Uwe Hofmann; Dietrich Haarer

doi:10.1117/12.328172

23 October 1998 Synthesis and characterization of novel photorefractive low molecular weight glasses

Christoph Hohle, Peter Strohriegl, Stefan Schloter, Uwe Hofmann, Dietrich Haarer

Proceedings Volume 3471, Xerographic Photoreceptors and Organic Photorefractive Materials IV; (1998) https://doi.org/10.1117/12.328172
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Seven novel photorefractive glasses have been prepared in an effective four-step synthesis. The low molar mass glasses consist of a triphenylamine-core substituted with two carbazole moieties and a NLO-chromophore (NLO-DCTAs). In a second series of compounds (NLO-DATAs) the carbazole groups are replaced by diphenylamine. The compounds from stable glasses with T_gs of about 120 degrees C and 85 degrees C. The photorefractive properties such as the diffraction efficiency (eta) , the modulation amplitude of the refractive index (Delta) n, and the gain coefficient (Gamma) were determined by means of degenerate four-wave mixing and two- beam coupling experiments. We observed diffraction efficiencies of (eta) equals 90 cm^-1. The samples have excellent properties with respect to optical quality and shelf-lifetime.

Citation Download Citation

Christoph Hohle, Peter Strohriegl, Stefan Schloter, Uwe Hofmann, and Dietrich Haarer "Synthesis and characterization of novel photorefractive low molecular weight glasses", Proc. SPIE 3471, Xerographic Photoreceptors and Organic Photorefractive Materials IV, (23 October 1998); https://doi.org/10.1117/12.328172

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