Large effective aperture metalens based on optical sparse aperture system  

作　　者：Tiecheng Liu Jingpei Hu Linglin Zhu Ruyi Zhou Chong Zhang Chinhua Wang Aijun Zeng Huijie Huang 刘铁诚;胡敬佩;朱玲琳;周如意;张冲;王钦华;曾爱军;黄惠杰(Laboratory of Information Optics and Optoelectronic Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Laboratory of Modern Optical Technologies of the Ministry of Education,Soochow University,Suzhou 215006,China)

机构地区：[1]Laboratory of Information Optics and Optoelectronic Technology,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China [2]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China [3]Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Laboratory of Modern Optical Technologies of the Ministry of Education,Soochow University,Suzhou 215006,China

出　　处：《Chinese Optics Letters》2020年第10期1-4,共4页中国光学快报（英文版）

基　　金：partially supported by the Intergovernmental International Cooperation Program in Science and Technology Innovation (No. 2016YFE0110600);International Science&Technology Cooperation Program of Shanghai (No. 16520710500);National Natural Science Foundation of China (No. 61805264);Youth Innovation Promotion Association CAS;Science and Technology Commission of Shanghai Municipality(No. 17YF1429500);Shanghai Sailing Program(No. 18YF1426500);University Scientific Research Foundation of Jiangsu Province (No. KJS1713)

摘　　要：We present a kind of large effective aperture metalens based on an optical sparse aperture(OSA) system. Each subaperture of the system is a metalens, which is comprised of just a thin Au film with patterned subwavelength rectangular annular arrays on a Si O2 substrate and has a numerical aperture of 0.46 with a diameter of 21.6 μm.Ring6 design was selected to enlarge the effective aperture and enhance the spatial resolution. Compared with the absent mid-frequency and high-frequency modulation transfer function of individual metalens, Ring6 can offer a full-frequency band and show a better restored image quality by using Tikhonov regularization.

关 键 词：optical sparse aperture metalens rectangular annular arrays 

分 类 号：TH74[机械工程—光学工程]