基于超构表面的偏振成像器件研究进展  

Research Progress of Polarization Imaging Devices Based on Metasurfaces

作　　者：黄天 张浩楠 赵雨 李子乐[1,2] 郑国兴 余少华[2] Huang Tian;Zhang Haonan;Zhao Yu;Li Zile;Zheng Guoxing;Yu Shaohua(Electronic Information School,Wuhan University,Wuhan 430072,Hubei,China;Peng Cheng Laboratory,Shenzhen 518055,Guangdong,China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]鹏城实验室,广东深圳518055

出　　处：《中国激光》2024年第17期64-81,共18页Chinese Journal of Lasers

基　　金：国家重点研发计划(2023YFB2804704);国家自然科学基金(12174292)。

摘　　要：偏振成像能够从多个维度获取目标信息,在医学诊断和遥感成像等领域中有着重要的应用价值。基于超构表面的偏振成像器件能够突破传统光学的尺寸限制,具有性能指标高、结构简单、体积小、重量轻、易集成等优点。回顾了近些年基于超构表面的偏振成像器件的研究和发展历程,并从非全斯托克斯偏振成像和全斯托克斯偏振成像出发,归纳了现有的基于超构表面的偏振成像器件的光波调控机理、发展现状和潜在的应用场景。最后对基于超构表面的偏振成像器件面临的挑战以及未来发展方向进行了总结和展望。Significance Polarization,as a fundamental dimension of light waves,plays an important role in the transmission of optical information.Utilizing the polarization information for multi-dimensional target detection has emerged as a prominent research trend in optical imaging.Polarization imaging technology enhances target detection capabilities by integrating spatial intensity and polarization data,thereby enriching the captured information.This augmentation leads to improved target detection and identification.Polarization imaging devices based on metasurfaces can overcome the limitations of traditional optics,offering high performance,simple structures,compact size,light weight,and easy integration.These advantages effectively meet the demand in fields such as aerospace and military reconnaissance.Progress Due to the limitations imposed by nanofabrication techniques,early research on metasurfaces primarily involved metallic structures.However,because of the low transmittance of metallic structures,metasurface-based polarization imaging devices operated in reflection mode,which hindered further integration with detectors and imaging components.With the advancement of nanofabrication techniques and deeper understanding of the metasurface working mechanisms,highly efficient transmissive dielectric metasurfaces have been proposed.This transition from metallic to all-dielectric materials enhances structural transmittance,enabling polarization imaging devices to operate in transmission mode,thereby facilitating the development of integrated devices.Based on the number of detectable Stokes parameters,polarization imaging is divided into partial Stokes and full Stokes polarization imaging.Partial Stokes polarization imaging devices detect only a subset of Stokes components,typically orthogonal linear or circular polarization components.Owing to the relatively small number of detected polarization components,partial Stokes polarization imaging devices are characterized by their simplicity in structure and high imaging res

关 键 词：超构表面 偏振成像 斯托克斯参数 

分 类 号：TN256[电子电信—物理电子学]