We report on the development of photoaddressable cholesteric liquid crystal (CLC) mixtures capable of large range color tuning as well as direct on-off electrical switching. The continuously photoaddressable CLC mixtures are based on a high HTP azo-containing chiral material mixed with an off-the-shelf nematic liquid crystal (QL9/E44). By polymer stabilizing the QL9/E44 mixture, it is demonstrated that the photoaddressable reflection of the notch can be switched on and off with an AC voltage. The novel combination of these effects has potential utility in lasing, dynamic notch filters, and spatial light modulators.
This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
White, Timothy J.; Bricker, Rebecca L.; Natarajan, Lalgudi V.; Tondiglia, Vincent P.; Green, Lisa; Li, Quan; Bunning, Timothy J. (2010). Electrically Switchable, Photoaddressable Cholesteric Liquid Crystal Reflectors. Optics Express 18(1) 173-178. Retrieved from https://oaks.kent.edu/cpippubs/355