5 March 2013 Bichromatic optical switch of diffractive light from a BCT photonic crystal based on an azo component-doped HPDLC
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Abstract
This study demonstrates all optical switches between the four diffractive light levels of a body-centered tetragonal photonic crystal. The sample is based on holographic polymer-dispersed liquid crystals that are fabricated using a twobeam interference with multiple exposures. The switching mechanism bases on the effective index modulation of the PC that contains a liquid crystal/azo-dye mixture could be controlled by two pumping laser beams. The switching time between the blue-laser-pumped and the blue-and-green-laser-pumped levels is fast.
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Ming Shian Li, Andy Ying-Guey Fuh, Jui-Hsiang Liu, Shing-Trong Wu, "Bichromatic optical switch of diffractive light from a BCT photonic crystal based on an azo component-doped HPDLC", Proc. SPIE 8642, Emerging Liquid Crystal Technologies VIII, 86420F (5 March 2013); doi: 10.1117/12.2007363; https://doi.org/10.1117/12.2007363
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