Arbitrary polarization conversion dichroism metasurfaces for all-in-one full Poincare sphere polarizers  

作　　者：Shuai Wang Zi-Lan Deng Yujie Wang Qingbin Zhou Xiaolei Wang Yaoyu Cao Bai-Ou Guan Shumin Xiao Xiangping Li 

机构地区：[1]Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications,Institute of Photonics Technology,Jinan University,510632 Guangzhou,China [2]Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System,Harbin Institute of Technology,518055 Shenzhen,China [3]Institute of Modern Optics,Nankai University,300350 Tianjin,China

出　　处：《Light(Science & Applications)》2021年第2期208-216,共9页光（科学与应用)（英文版）

基　　金：supported by the National Key R&D Program of China(2018YFB1107200);the National Natural Science Foundation of China(NSFC)(Grants 62075084,61522504,61420106014,11734012,and 11574218);the Guangdong Provincial Innovation and Entrepreneurship Project(Grant 2016ZT06D081);the Guangdong Basic and Applied Basic Research Foundation(2020A1515010615);the Fundamental Research Funds for the Central Universities(21620415);the China Scholarship Council(201906785011).

摘　　要：The control of polarization,an essential property of light,is of broad scientific and technological interest.Polarizers are indispensable optical elements for direct polarization generation.However,arbitrary polarization generation,except that of common linear and circular polarization,relies heavily on bulky optical components such as cascading linear polarizers and waveplates.Here,we present an effective strategy for designing all-in-one full Poincare sphere polarizers based on perfect arbitrary polarization conversion dichroism and implement it in a monolayer all-dielectric metasurface.This strategy allows preferential transmission and conversion of one polarization state located at an arbitrary position on the Poincare sphere to its handedness-flipped state while completely blocking its orthogonal state.In contrast to previous methods that were limited to only linear or circular polarization,our method manifests perfect dichroism of nearly 100%in theory and greater than 90%experimentally for arbitrary polarization states.By leveraging this attractive dichroism,our demonstration of the generation of polarization beams located at an arbitrary position on a Poincare sphere directly from unpolarized light can substantially extend the scope of meta-optics and dramatically promote state-of-the-art nanophotonic devices.

关 键 词：surface. POINCARE ARBITRARY 

分 类 号：O436.3[机械工程—光学工程]