Polymer Stabilization Enhances the Orientational Optical Nonlinearity of Oligothiophene-Doped Nematic Liquid Crystals

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Abstract

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A highly efficient nonlinear optical response in terms of both low threshold intensity and high stability is achieved in polymer-stabilized liquid crystals doped with a small amount of oligothiophene. Polymer stabilization decreases the threshold intensity by a factor of 6, and a large refractive index change of 0.14 is stably maintained up to high (>110 W cm-2) pump intensities.

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