液晶
材料科学
胆甾液晶
光学
栅栏
极化(电化学)
光电子学
衍射效率
衍射光栅
衍射
物理
化学
物理化学
作者
Yi-Chen Chuang,Y. C. Li,Ting‐Mao Feng,Chun‐Ta Wang
标识
DOI:10.1002/admt.202400726
摘要
Abstract Liquid crystal polarization gratings liquid crystal Pancharatnam‐Berry phase optical element (LCPGs) are a superior alternative to traditional diffraction gratings due to their high diffraction efficiency, strong polarization sensitivity, and versatile tunability. This paper introduces an electrically switchable liquid crystal polarization grating based on cholesteric liquid crystals (CLCs). The LCPG is designed to operate in reflective (R‐mode) and transmissive (T‐mode) states. It utilizes the standing helical (SH) configuration of CLCs for reflective functionality and transitions to a lying helical (LH) configuration for transmissive operations. This dual‐mode capability is achieved through a unique application of electric fields, which reorient the liquid crystal helix axis according to the desired optical function. The performance of the LCPG in both R‐mode and T‐mode is evaluated by applying different frequencies and voltages to dynamically switch between the helical states. The manufacturing process is simple, and the device performs robustly. This suggests that the technology could be useful for developing optical systems that require dynamic control over light modulation.
科研通智能强力驱动
Strongly Powered by AbleSci AI