Real-time monitoring of polarization state deviations with dielectric metasurfaces  

作　　者：Shaun Lung Jihua Zhang Kai Wang Andrey A.Sukhorukov 

机构地区：[1]The Australian National University,Research School of Physics,Centre of Excellence for Transformative Meta-Optical Systems(TMOS),Department of Electronic Materials Engineering,Canberra,Australian Capital Territory,Australia [2]McGill University,Department of Physics,Montréal,Quebec,Canada

出　　处：《Advanced Photonics Nexus》2023年第2期65-72,共8页先进光子学通讯（英文）

基　　金：supported by the Australian Research Council(Grant Nos.NI210100072 and CE200100010);US AOARD(Grant No.19IOA053).

摘　　要：We propose and experimentally demonstrate a dielectric metasurface that allows monitoring of polarization deviations from an arbitrary elliptical input anchor state simply by tracking in real-time the output ratio between the powers of horizontal and vertical components after the metasurface.Importantly,this ratio can be enhanced corresponding to increased responsivity.Such nontrivial functionality is achieved by designing binary metasurfaces that realize tailored nonunitary and chiral polarization transformation.We experimentally demonstrate the operation at telecommunication wavelengths with enhanced responsivity up to 25 for various anchor states,including the strongly elliptical and circular.We also achieve the uncertainty of deviation measurement that is significantly better than the fundamental limit for nonchiral metasurfaces.

关 键 词：NANOPHOTONICS metasurface POLARIMETRY NANOSTRUCTURE nanofabrication 

分 类 号：O43[机械工程—光学工程]