Arbitrary manipulations of focused higher-order Poincare beams by a Fresnel zone metasurface with alternate binary geometric and propagation phases  

作　　者：XIANGYU ZENG YUQIN ZHANG MANNA GU ZIJUN ZHAN RUIRUI ZHANG YU ZHANG RUI SUN CHANGWEI HE CHUNXIANG LIU CHUANFU CHENG 

机构地区：[1]School of Physics and Electronics,Shandong Normal University,Jinan 250014,China [2]School of Science,Shandong Jianzhu University,Jinan 250101,China [3]School of Computer Science and Technology,Shandong University of Finance and Economics,Jinan 250014,China

出　　处：《Photonics Research》2022年第4期1117-1126,共10页光子学研究（英文版）

基　　金：National Natural Science Foundation of China(11904212,12004215,62175134).

摘　　要：The manipulation of high-quality vector beams(VBs)with metasurfaces is an important topic and has potential for classical and quantum applications.In this paper,we propose a Fresnel zone(FZ)metasurface with metallic nanoslits arranged on FZs,which sets alternate binary geometric and propagation phases to cancel the incident spin component and focus the converted spin component(CSC).The rotation designs of nanoslits transform the incident polarization state on the conventional Poincare sphere to VBs on the higher-order Poincare(HOP)sphere.The two orbital angular momentum states of the CSCs were manipulated,and the focused HOP beams were generated.The experimental results demonstrate the broadband generation of arbitrarily focused HOP beams of high quality under the illumination of the red(632.8 nm),green(532 nm),and blue(473 nm)light.This work will be of significance for the applications of VBs in different areas,such as precision metrology,optical micromanipulation,and quantum information.

关 键 词：POINCARE ALTERNATE FRESNEL 

分 类 号：O43[机械工程—光学工程]