https://scholars.lib.ntu.edu.tw/handle/123456789/621091
標題: | An Ultra-Broadband High Efficiency Polarization Beam Splitter for High Spectral Resolution Polarimetric Imaging in the Near Infrared | 作者: | 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. HUI-HSIN HSIAO |
關鍵字: | gap-plasmon metasurface; high-resolution multiple-species atmospheric profiler; plasmon hybridization; spatial-spectral-polarimetric images | 公開日期: | 2022 | 來源出版物: | Advanced Science | 摘要: | 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. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85133894408&doi=10.1002%2fadvs.202201227&partnerID=40&md5=02b3c2cbb336acbf18c11a41ddd453f9 https://scholars.lib.ntu.edu.tw/handle/123456789/621091 |
DOI: | 10.1002/advs.202201227 | SDG/關鍵字: | 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 |
顯示於: | 工程科學及海洋工程學系 |
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