Visible-frequency meta-gratings for light steering, beam splitting and absorption tunable functionality.

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ID: 86730
2019
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Abstract
Diffractive grating and plasmonic metasurface have always been developing as two parallel optical domains, which have not met for studying their hybridization to discover new applications and potentials. Here, we proposed a novel meta-grating design, which hybridizes the metasurface interfacial gradient with the blazed grating profile. The unique architecture takes advantage of both grating effect and plasmonic resonances with minimum cross-coupling, thus leading to the polarization-selective behaviors to steer different polarized light to drastically inverse directions (> 90°). Furthermore, the hybridized surface also exhibits angle-dependent broadband absorptive tunability (∼ 5% - 86%) by migrating the strong blazed order and plasmonic order at the far field. We believe that the integrated meta-grating device would suggest various potential applications including polarization beam splitters, high signal-to-noise ratio (SNR) optical spectrometer, high-efficiency plasmonic couplers and filter, etc.
Reference Key
wan2019visiblefrequencyoptics Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wan, Chengwei;Yang, Rui;Shi, Yangyang;Zheng, Guoxing;Li, Zhongyang;
Journal Optics express
Year 2019
DOI
10.1364/OE.27.037318
URL
Keywords
spectroscopy biomedical sensor control setup mode competition optical design

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