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Optically addressed As50Se50-liquid crystal structure highly sensitive to He-Ne laser radiation

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Abstract

An optically addressed structure of the As x Se1-x -liquid crystal (LC) type, with the photoconductor composition deviating from stoichiometry toward excess arsenic, has been tested using holographic techniques. It is established that the As50Se50-LC structure (with maximum possible arsenic content in the photoconductor) exhibits record high sensitivity (2.2 × 10−7 W/cm2) at a He-Ne laser radiation wavelength. Based on this structure, it is possible to implement nonlinear optical data-processing algorithms employing the entire transmission characteristic including the inversion region. The maximum diffraction efficiency achieved with the As50Se50-LC structure amounts to 36.5%.

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Authors and Affiliations

  1. St. Petersburg State University of Information Technology, Mechanics, and Optics, St. Petersburg, Russia

    L. P. Amosova & A. N. Chaika

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  1. L. P. Amosova
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  2. A. N. Chaika
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Original Russian Text © L.P. Amosova, A.N. Chaika, 2007, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2007, Vol. 33, No. 6, pp. 56–62.

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Amosova, L.P., Chaika, A.N. Optically addressed As50Se50-liquid crystal structure highly sensitive to He-Ne laser radiation. Tech. Phys. Lett. 33, 255–257 (2007). https://doi.org/10.1134/S1063785007030200

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  • DOI: https://doi.org/10.1134/S1063785007030200

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