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16 December 1993 Nonlinear optical response in side-chain liquid crystal polymers
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Abstract
Nonlinear optical response of copolymers bearing pendant active mesogenic units have been studied. The A and C polymers are nematic and smectic A, respectively, while the B and D polymers resemble typical amorphous polymers. Spin-coated films have been activated using the corona poling technique. From the optical absorption spectra, order parameters in the range 0.4 - 0.6 have been determined. The rather large values obtained for the B and D polymers suggest that an isotropic/nematic transition occurs during poling. Second harmonic generation measurements relative to quartz have been performed to determine the values of second order coefficients d33 and d31.
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Dominique Gonin, Gregory Gadret, Claudine Noel, and Francois Kajzar "Nonlinear optical response in side-chain liquid crystal polymers", Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); https://doi.org/10.1117/12.165249
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