Light Reconfigurable Geometric Phase Optical Element with Multi-stable States
Abstract
We present the design methodology of a light reconfigurable geometric phase optical element with multi-stable diffraction efficiency states, enabled by a photoresponsive self-organized chiral liquid crystal. Experimental demonstration shows the device exhibits a broad diffraction efficiency tunable range that can be smoothly modulated under alternate stimulation of ultraviolet and green lights. Distinctive to previous designs, the regulation of diffraction efficiency fundamentally stems from the modulation of geometric phase together with dynamical phase retardation, and any intermediate diffractive state is memorized. Such multi-stability facilitates applications including energy-saving all-optical signal processing in classical and quantum level, and phase hologram for anti-counterfeit.
Cite
@article{arxiv.1810.05491,
title = {Light Reconfigurable Geometric Phase Optical Element with Multi-stable States},
author = {Xiao-Qian Wang and Alwin Ming-Wai Tam and Wei-Qiang Yang and Engle Liao and Ka Chun Cheung and Wei Hu and Dong Shen and Vladimir Chigrinov and Hoi-Sing Kwok and Zhi-gang Zheng and Yanqing Lu and Quan Li},
journal= {arXiv preprint arXiv:1810.05491},
year = {2018}
}
Comments
6 pages, 2 figures