Liang, YaoLin, HanKoshelev, KirillZhang, FengchunYang, YunyiWu, JiayangKivshar, YuriJia, Baohua2023-10-059-14 May 2978-1-943580-91-0http://hdl.handle.net/1885/301276We demonstrate experimentally perfect absorbers for arbitrary polarization (linear, circular, or elliptical) in the mid-IR based on plasmonic diatomic metasurfaces, which provide perfect absorption for any specific polarization and almost total reflection for the orthogonal polarization.The authors acknowledge financial support from the Australian Research Council, the Strategic Fund of the Australian National University, the Russian Foundation for Basic Research (19-02-00419), and the Grant of the President of the Russian Federation (MK-2224.2020.2). B.J. acknowledges support from the Australia Research Council (DP190103186, IC180100005). F.Z. thanks the Natural Science Foundation of Guangdong Province (2020A1515010786) and acknowledges financial support from the China Scholarship Council (201808440576) and the Youth Scholar’s Scientific Research Foundation of South China Normal University (17KJ12)application/pdfen-AUCLEO 2021 © OSA 2021202110.1364/CLEO_QELS.2021.FW4J.22022-08-07