Reconfigurable continuous-zoom metalens in visible band

作     者：Yuan Cui Guoxing Zheng Ming Chen Yilun Zhang Yan Yang Jin Tao Taotao He Zile Li 崔圆;郑国兴;陈明;张逸伦;杨妍;陶金;何桃桃;李子乐

作者机构：Electronic Information SchoolWuhan UniversityWuhan 430072China NOEICState Key Laboratory of Optical Comm unication Technologies and NetworksWuhan Research Institute of Posts and TelecommunicationsWuhan 430074China Photonics Research CentreGuilin University of Electronic TechnologyGuilin 541004China Integrated Circuit Advanced Process CenterInstitute of Microelectronics of Chinese Academy of SciencesBeijing 100029China 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2019年第17卷第11期

页      面：69-74页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.11774273,11574240,61640409,and 61805184) the Outstanding Youth Funds of Hubei Province(No.2016CFA034) the Open Foundation of State Key Laboratory of Optical Communication Technologies and Networks,Wuhan Research Institute of Posts and Telecommunications(No.OCTN-201605) the Postdoctoral Innovation Talent Support Program of China(No.BX20180221) the Natural Science Foundation of Guangxi(No.2017GXNSFAA198048) 

主　　题：continuous visible rotating 

摘      要：The design of a conventional zoom lens is always challenging because it requires not only sophisticated optical design strategy, but also complex and precise mechanical structures for system adjustment. Here, we propose a continuous-zoom lens consisting of two chiral geometric metasurfaces with dielectric nanobrick arrays sitting on a transparent substrate. The metalens can continuously vary the focal length by rotating either of the two metasurfaces around its optical axis without changing any other conditions. Due to the polarization dependence of the geometric metasurface, the positive and negative polarities are interchangeable in one identical metalens only by changing the handedness of the incident circularly polarized light, which can generate varying focal lengths ranging from-∞ to +∞ in principle.