Journal
OPTICS LETTERS
Volume 36, Issue 19, Pages 3864-3866Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.36.003864
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- National Science Council of Taiwan (NSCT) [NSC 98-2112 M-006-001-MY3, 98-2923 M-006-001-MY3]
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This study demonstrates an optical switch of the diffractive light from a body-centered tetragonal photonic crystal based on holographic polymer-dispersed liquid crystals that are fabricated using two-beam interference with multiple exposures. The liquid crystal-rich regions form the lattice points of the PC, which contains a liquid crystal/azo-dye mixture. The concentration of the cis isomer changes under laser light exposure; this change, in turn, modulates the effective index of the LCs, and then switches diffractive light. (C) 2011 Optical Society of America
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