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Updated: Jan 25, 2026

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
Published on: October 31, 2019
Fast and low loss flexoelectro-optic liquid crystal phase modulator with a chiral nematic reflector
Xiuze Wang1, Julian A J Fells1, Wing C Yip2
1Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, UK.
Abstract:
In this paper, we demonstrate a flexoelectro-optic liquid crystal phase-only device that uses a chiral nematic reflector to achieve full 2π phase modulation. This configuration is found to be very tolerant to imperfections in the chiral nematic reflector provided that the flexoelectro-optic LC layer fulfils the half-wave condition. Encouragingly, the modulation in the phase, which operates at kHz frame rates, is also accompanied by low amplitude modulation. The configuration demonstrated herein is particularly promising for the development of next-generation liquid crystal on silicon spatial light modulators.
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