An Ultra‐Broadband High Efficiency Polarization Beam Splitter for High Spectral Resolution Polarimetric Imaging in the Near Infrared (Adv. Sci. 27/2022)

Ultra-Broadband, High Efficiency Polarized Beam Splitter Metagrating In article number 2201227, Hui-Hsin Hsiao, Richard E. Muller, Dejian Fu, and co-workers demonstrate a polarized beam splitter metagrating that enables simultaneous measurement of four spatialspectral- polarimetric images with an efficiency of 70% and a polarimetric contrast greater than 0.996 in the entire near-infrared oxygen bands, which will be integrated into NASA's high-resolution multiplespecies atmospheric profiler instrument for vertical profiling of global aerosols.