Visible-to-near-infrared spectrum reconstruction with dielectric metasurfaces  

作　　者：Kaikai Gao Peiyang Li Jiayi Wang Sheng Liu Peng Li Dexing Yang Jianlin Zhao Dandan Wen 高凯凯;李佩洋;王佳怡;刘圣;李鹏;杨德兴;赵建林;温丹丹(Key Laboratory of Light Field Manipulation and Information Acquisition,Ministry of Industry and Information Technology,and Shaanxi Key Laboratory of Optical Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,Xi’an 710129,China)

机构地区：[1]Key Laboratory of Light Field Manipulation and Information Acquisition,Ministry of Industry and Information Technology,and Shaanxi Key Laboratory of Optical Information Technology,School of Physical Science and Technology,Northwestern Polytechnical University,Xi’an 710129,China

出　　处：《Chinese Optics Letters》2024年第9期137-141,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62175200);the National Key Research and Development Program of China(No.2022YFA1404800).

摘　　要：The miniaturization of spectrometers has received much attention in recent years.The rapid development of metasurfaces has provided a new avenue for creating more compact and lightweight spectrometers.However,most metasurface-based spectrometers operate in the visible light region,with much less research on near-infrared wavelengths.This is possibly caused by the lack of effective metasurface filters for the near-infrared light.We design and fabricate a polarizationinsensitive amorphous silicon metasurface that exhibits unique transmission spectra in parts of the visible and nearinfrared wavelengths.By passing the light to be measured through a metasurface filter array and measuring the transmitted power,we achieve the precise reconstruction of unknown spectra in the visible and near-infrared range(450-950 nm)using an algorithm matched to the filter model.Our approach is a step towards miniaturized spectrometers within the visible-to-near-infrared range based on metasurface filter arrays.

关 键 词：metasurfaces FILTERS spectrum reconstruction algorithm. 

分 类 号：O433[机械工程—光学工程]