Wavelength-insensitive snapshot Stokes polarimetric imaging based on cascaded metasurfaces  

作　　者：Xuanguang Wu Kai Pan Xuanyu Wu Xinhao Fan Liang Zhou Chenyang Zhao Dandan Wen Sheng Liu Xuetao Gan Peng Li Jianlin Zhao 

机构地区：[1]Northwestern Polytechnical University,School of Physical Science and Technology,Ministry of Industry and Information Technology,Key Laboratory of Light Field Manipulation and Information Acquisition,Shaanxi Key Laboratory of Optical Information Technology,Xi’an,China [2]Northwestern Polytechnical University,Analytical and Testing Center,Xi’an,China

出　　处：《Advanced Photonics》2025年第1期74-84,共11页先进光子学(英文)

基　　金：supported by the National Key R&D Program of China (Grant No. 2022YFA1404800);the National Natural Science Foundation of China (NSFC)(Grant Nos. 12474298,12174309, and 12074313);the Shaanxi Fundamental Science Research Project for Mathematics and Physics (Grant No. 22JSY013);the Fundamental Research Funds for the Central Universities (Grant No. 5000230111);the Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University (Grant No. CX2024097)。

摘　　要：Compact, single-shot, and accurate Stokes polarimetric imagers are highly desirable for imaging at all scales, from remote sensing to biological diagnosis. Recently, polarimetric imaging demonstrated on the metasurface platform is accelerating its realization and revolutionizing associated techniques and imagers. These breakthroughs, however, are greatly limited by the single operating wavelength and the complexity of metasurfaces. We present a minimalist yet powerful cascaded metasurface strategy to realize wavelength-insensitive snapshot Stokes polarimetric imaging. Two cascaded metasurface polarization gratings built into the 4f imaging system enable optical spin Hall momentum shifts and cross-polarization interference of incident light, which are wavelength-robust and free of polarization cross talk, allowing the4f system to perform accurate and single-shot polarimetric imaging at an arbitrary wavelength and even lowcoherence light. We demonstrate the feasibility and robustness of this cascaded metasurface architecture by characterizing diverse polarization objects. We open an avenue for polarimetric imaging and exhibit promising potential in emerging areas of applications such as biological diagnosis.

关 键 词：POLARIMETRY metasurface interferometry Stokes vector 

分 类 号：O436[机械工程—光学工程]