7 March 2016 Continuous phase modulation in polymer-stabilized liquid crystals
Author Affiliations +
Proceedings Volume 9769, Emerging Liquid Crystal Technologies XI; 976912 (2016) https://doi.org/10.1117/12.2222379
Event: SPIE OPTO, 2016, San Francisco, California, United States
Abstract
Continuous optical phase modulation was systematically investigated in a nematic host liquid crystal (LC), which was stabilized with in-situ generated photopolymer. Various driving modes were investigated. With presence of a chiral dopant, polarization independent and fast electro-optic responses were found in both blue phase mode and uniformly standing helix mode. Anyway, high driving voltages > 100 V were required to achieve phase modulation depths > π in reflective test cells with planar electrodes. In contrast, much lower driving voltages < 15 V were required in a polymernetwork LC based on the same host LC if no chiral dopant was present. In this driving mode, high phase contrast and sums of response times (ton+toff ) ≈ 3 – 4 ms were found, fast enough to achieve 200-400 Hz modulations.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Lorenz, A. Lorenz, L. Braun, L. Braun, V. Kolosova, V. Kolosova, R. Hyman, R. Hyman, T. D. Wilkinson, T. D. Wilkinson, } "Continuous phase modulation in polymer-stabilized liquid crystals", Proc. SPIE 9769, Emerging Liquid Crystal Technologies XI, 976912 (7 March 2016); doi: 10.1117/12.2222379; https://doi.org/10.1117/12.2222379
PROCEEDINGS
9 PAGES


SHARE
Back to Top