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4 March 2019 Dynamic electro-optic responses of holographically patterned polymer stabilized cholesteric liquid crystals (Conference Presentation)
Kyung Min Lee, Vincent P. Tondiglia, Timothy J. White, Timothy J. Bunning, Michael E. McConney
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Proceedings Volume 10944, Practical Holography XXXIII: Displays, Materials, and Applications; 1094404 (2019) https://doi.org/10.1117/12.2507475
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
Recently, we have prepared holographic reflection gratings in polymer stabilized cholesteric liquid crystals (H-PSCLCs) prepared by a 365 nm UV laser using a single prism. The H-PSCLC samples are prepared using various CLC mixtures, formulated from 2wt% photoinitiator, 5~20 wt% liquid crystal monomers, chiral dopants, and positive or negative dielectric anisotropy liquid crystals. Higher order reflection peaks, such as the second and third order reflections, are observed from the H-PSCLC samples without application of the electric field. Spectral position and bandwidth of the higher order diffraction peaks in the H-PSCLCs are tuned in blue, green, and red colors by the application of the direct current (DC) field. Tunablity of the higher order reflection band in H-PSCLCs will be discussed.
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Kyung Min Lee, Vincent P. Tondiglia, Timothy J. White, Timothy J. Bunning, and Michael E. McConney "Dynamic electro-optic responses of holographically patterned polymer stabilized cholesteric liquid crystals (Conference Presentation)", Proc. SPIE 10944, Practical Holography XXXIII: Displays, Materials, and Applications, 1094404 (4 March 2019); https://doi.org/10.1117/12.2507475
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KEYWORDS
Liquid crystals
Holography
Polymers
Electro optic polymers
Electro optics
Anisotropy
Dielectrics
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