Vectorial liquid‑crystal holography  

作　　者：Ze‑Yu Wang Zhou Zhou Han Zhang Yang Wei Hong‑Guan Yu Wei Hu Wei Chen Hai‑Tao Dai Ling‑Ling Ma Cheng‑Wei Qiu Yan‑Qing Lu 

机构地区：[1]National Laboratory of Solid State Microstructures,Key Laboratory of Intelligent Optical Sensing and Manipulation,Collaborative Innovation Center of Advanced Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China [2]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117583,Singapore [3]Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology,School of Science,Tianjin University,Tianjin 300072,China

出　　处：《eLight》2024年第1期251-261,共11页e光学(英文)

基　　金：supported by the National Key Research and Development Program of China(Nos.2022YFA1405000 and 2021YFA1202000);National Natural Science Foundation of China(No.62375119);Natural Science Foundation of Jiangsu Province(No.BK20212004);Basic Research Program of Jiangsu Province(BK20232040);Fundamental Research Funds for the Central Universities(021314380231);L.L.Ma gratefully acknowledges the support of Young Elite Scientists Sponsorship Program by CAST(2022QNRC001),Xiaomi Young Scholar Program,and Integrated Research Platform for Key Technologies(SAAT),Nanjing University.

摘　　要：Vectorial optics with fine inhomogeneous polarization control are highly desired.Metasurfaces have been captivated a promising candidate,but their static post-fabrication geometry largely limits the dynamic tunability.Liquid crystal(LC)is usually employed as an additional index-changing layer together with metasurfaces.Unfortunately,most of the reported LCs only impart a varying but uniform phase on top of that from the metasurface,which we term“scalar”LC optics.Here,we pixelate a single-layer LC to display versatile and tunable vectorial holography,in which the polarization and amplitude could be arbitrarily and independently controlled at varying spatial positions.Furthermore,the subtle and vectorial LC-holography highlights the broadband and electrically-switchable functionalities.Our vectorial LC holography reveals significant opportunities for advanced cryptography,super-resolution imaging,and many other applications.

关 键 词：Liquid crystals Vectorial optics HOLOGRAPHY 

分 类 号：O43[机械工程—光学工程]