Long‐Range Disorder MetaSurface Enabled High‐Performance One‐Shot Ultraviolet Full‐Stokes Polarimeter

Abstract

AbstractThe rapidly‐developed nanophotonics enable the realization of highly‐precise, ultra‐compact full Stokes polarimeters. However, realizing large‐area well‐designed structures with complex chiral morphology and subwavelength size is still a challenge to the current micro/nano‐engineering technology. Here, one high‐performance, ultra‐compact, and one‐shot full‐Stokes polarimeters in the ultraviolet waveband for the first time based on the long‐range disorder chiral shells fabricated by the micro‐sphere lithography are experimentally demonstrated. This chiral–shell monolayer owns strong and distinct optical chirality and anisotropy between the shells in adjacent micro‐domains and thus leads to different photo‐electric responses to the incident polarized lights for the photodetectors placed underneath. Through employing the residual convolutional neural network to extract the Stokes parameter , a small detection averaged mean square error (MSE) of <0.5% from 316 nm to 410 nm is realized, and the minimum MSEs at 361 nm can reach recorded values of ≈0.02% (), 0.017% (), and 0.014% (). The influence of exposure time and pixel number, and the system stability are systematically investigated. This work brings new inspiration for the disorder structures based on Bottom‐Up methods, high‐performance polarimeters, and polarization imaging devices.