Compact multi-foci metalens spectrometer  

作　　者：Ruoxing Wang Muhammad Afnan Ansari Hammad Ahmed Yan Li Wenfeng Cai Yanjun Liu Songtao Li Jianlong Liu Li Li Xianzhong Chen 

机构地区：[1]Department of Mathematics and Physics,North China Electric Power University,071003 Baoding,China [2]Institute of Photonics and Quantum Sciences,School of Engineering and Physical Sciences,Heriot-Watt University,Edinburgh EH144AS,UK [3]School of Materials,Zhengzhou University of Aeronautics,450015 Zhengzhou,China [4]Department of Electrical and Electronic Engineering,Southern University of Science and Technology,518055 Shenzhen,China [5]College of Physics and Optoelectronic Engineering,Harbin Engineering University,150001 Harbin,China [6]School of Physics,Harbin Institute of Technology,150001 Harbin,China

出　　处：《Light(Science & Applications)》2023年第5期905-914,共10页光（科学与应用)（英文版）

基　　金：funded by the Engineering and Physical Sciences Research Council(EP/P029892/1);the Leverhulme Trust(RPG-2021-145);the Royal Society International Exchanges(IES\R3\193046);the support from the National Natural Science Foundation of China(62205106).

摘　　要：A lightweight and portable spectrometer is desirable for miniaturization and integration.The unprecedented capability of optical metasurfaces has shown much promise to perform such a task.We propose and experimentally demonstrate a compact high-resolution spectrometer with a multi-foci metalens.The novel metalens is designed based on wavelength and phase multiplexing,which can accurately map the wavelength information into its focal points located on the same plane.The measured wavelengths in the light spectra agree with simulation results upon the illumination of various incident light spectra.The uniqueness of this technique lies in the novel metalens that can simultaneously realize wavelength splitting and light focusing.The compactness and ultrathin nature of the metalens spectrometer render this technology have potential applications in on-chip integrated photonics where spectral analysis and information processing can be performed in a compact platform.

关 键 词：SPECTRA UNIQUENESS ILLUMINATION 

分 类 号：O17[理学—数学]