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P‐167: Pre‐transitional Effect of Antiferroelectric Liquid Crystals and Their Photonic Applications
Author(s) -
Feng Zhengyu,
Chiang Po-Jen,
Chen Shu-jhih,
Lee Chia-yu,
Ishikawa Ken
Publication year - 2019
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.13323
Subject(s) - antiferroelectricity , liquid crystal , materials science , optics , polarization (electrochemistry) , diffraction , modulation (music) , phase transition , phase (matter) , optoelectronics , condensed matter physics , chemistry , ferroelectricity , physics , organic chemistry , acoustics , dielectric
A phase‐only modulation mode based on the pre‐transitional effect of antiferroelectric liquid crystal(AFLC) is demonstrated. This field‐induced biaxiality enables 2π phase modulation of 632.8nm light and keeps the polarization state invariant for TE or TM light. Based on this, a switchable phase grating is constructed and the maximum diffraction efficiency of 37.0% is achieved at 1.8V/µm for the ±1st order.