3 December 2003 Two-photon absorption and secondary nonlinear effects in doped LC sytems
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The use of two-photon absorption (TPA) as mechanism of optical limiting puts a question about material, whose structure would provide effective TPA in initially transparent medium. The advantages of use of impurity mesomorphic systems in the tasks of optical limiting are discussed. It is necessary to take into account various detrimental effects on process of limiting may arise in molecular systems in conditions of high-power photoexcitation and high concentrations of excited fragments.
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V. V. Danilov, O. V. Chistiakova, A. I. Khrebtov, Teimur A. Shakhverdov, Eugene N. Sosnov, "Two-photon absorption and secondary nonlinear effects in doped LC sytems", Proc. SPIE 5257, Ninth International Conference on Nonlinear Optics of Liquid and Photorefractive Crystals, (3 December 2003); doi: 10.1117/12.545791; https://doi.org/10.1117/12.545791

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