Polymer-enhanced diffraction in an azo-dye-doped liquid crystal

Manlin Pei; Yong-Jing Wang; Gene O. Carlisle

doi:10.1117/1.1386645

1 August 2001 Polymer-enhanced diffraction in an azo-dye-doped liquid crystal

Manlin Pei, Yong-Jing Wang, Gene O. Carlisle

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Optical Engineering, 40(8), (2001). https://doi.org/10.1117/1.1386645

Abstract

Degenerate four-wave mixing measurements were employed to obtain first-order diffraction efficiencies of dye-doped and polymer- dye-doped liquid crystals. A sixfold enhancement in the diffraction efficiency (12%) was found for the liquid crystal doped with 1% azo dye and 1% polymer, compared to a 2% diffraction efficiency found for the liquid crystal containing 1% azo dye. Polarization dependence of absorption and diffraction studies, coupled with the absence of two-beam coupling, support a grating formation based on photoisomerization of azo dye molecules, which leads to a reorientation of the liquid crystal phase.

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Manlin Pei, Manlin Pei, Yong-Jing Wang, Yong-Jing Wang, Gene O. Carlisle, Gene O. Carlisle, } "Polymer-enhanced diffraction in an azo-dye-doped liquid crystal," Optical Engineering 40(8), (1 August 2001). https://doi.org/10.1117/1.1386645 . Submission:

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