Metasurface-enabled polarization-independent LCoS spatial light modulator for 4K resolution and beyond  

作　　者：Zhaoxiang Zhu Yuanhui Wen Jiagi Li Yujie Chen Zenghui Peng Jianxiong Liz Lei Zhu Yunfei Wu Lidan Zhou Lin Liu Liangjia Zong Siyuan Yu 

机构地区：[1]State Key Laboratory of Optoelectronic Materials and Technologies,School of Electronics and Information Technology,Sun Yat-sen University,Guangzhou 510275,China [2]Huawei Technologies Co.,Ltd.,Bantian,Longgang District,Shenzhen 518129,China [3]State Key Laboratory of Applied Optics,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China

出　　处：《Light(Science & Applications)》2023年第7期1391-1400,共10页光（科学与应用)（英文版）

基　　金：supported by the National Key Research and Development Program of China(2019YFA0706302,2018YFB1801803,2021YFB3600300);Huawei-Sun Yat-sen University Technical Cooperation Project(TC20210311006);Basic and Applied Basic Research Foundation of Guangdong Province(2021B1515020093,2021B1515120057);Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program(2017BT01X121);National Natural Science Foundation of China(11774437,61975202).

摘　　要：With the distinct advantages of high resolution,small pixel size,and multi-level pure phase modulation,liquid crystal on silicon(LCoS)devices afford precise and reconfigurable spatial light modulation that enables versatile applications ranging from micro-displays to optical communications.However,LCoS devices suffer from a long-standing problem of polarization-dependent response in that they only perform phase modulation on one linear polarization of light,and polarization-independent phase modulation-essential for most applications-have had to use complicated polarization-diversity optics.We propose and demonstrate,for the first time,an LCos device that directly achieves high-performance polarization-independent phase modulation at telecommunication wavelengths with 4K resolution and beyond by embedding a polarization-rotating metasurface between the LCoS backplane and the liquid crystal phase-modulating layer.We verify the device with a number of typical polarization-independent application functions including beam steering,holographical display,and in a key optical switching element-wavelength selective switch(WsS),demonstrating the significant benefits in terms of both configuration simplification and performance improvement.

关 键 词：POLARIZATION BEYOND MODULATOR 

分 类 号：O4[理学—物理]