An Ultra-Broadband High Efficiency Polarization Beam Splitter for High Spectral Resolution Polarimetric Imaging in the Near Infrared
Journal
Advanced Science
Date Issued
2022
Author(s)
Hsiao H.-H.
Muller R.E.
McGuire J.P.
Nemchick D.J.
Shen C.-H.
Harten G.V.
Rud M.
Johnson W.R.
Nordman A.D.
Wu Y.-H.
Wilson D.W.
Chiou Y.-P.
Choi M.
Hyon J.J.
Fu D.
Abstract
A broadband, high efficiency polarized beam splitter (PBS) metagrating based on integrated resonant units (IRUs) to enable simultaneous polarization analysis, spectral dispersion, and spatial imaging in the near infrared (NIR) is developed. A PBS metagrating with a diameter of 60 mm is the key technology component of the high-resolution multiple-species atmospheric profiler in the NIR (HiMAP-NIR), which is a spaceborne instrument concept crafted to be a core payload of NASA's new generation Earth System Observatory. HiMAP-NIR will enable the aerosol profiling in Earth's planetary boundary layer (from surface to2 km altitude) by simultaneously measuring four spatial-spectral-polarimetric images from 680 to 780 nm. Through detailed optimization of hybridized resonant modes in IRUs, the PBS metagrating shows a diffraction efficiency of 70% (or better) for all four linear-polarized incident light, and polarization contrasts between orthogonal states are 0.996 (or better) from 680 to 780 nm. It meets the stringent performance required by the HiMAP-NIR exploiting a new paradigm for the broad applications of metasurfaces. © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
Subjects
gap-plasmon metasurface; high-resolution multiple-species atmospheric profiler; plasmon hybridization; spatial-spectral-polarimetric images
SDGs
Other Subjects
Boundary layers; Efficiency; Infrared devices; Light polarization; NASA; Plasmons; Polarimeters; Prisms; Spectral resolution; Gap plasmon; Gap-plasmon metasurface; High resolution; High-resolution multiple-species atmospheric profiler; Metasurface; Multiple species; Near Infrared; Plasmon hybridization; Polarimetric image; Spatial-spectral-polarimetric image; Incident light
Type
journal article