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3 October 2022 Reconfigurable asymmetric transmission through all-dielectric metagratings (Conference Presentation)
Abbas Sheikh Ansari, Ashwin K. Iyer, Behrad Gholipour, Joshua Perkins
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Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC121951E (2022) https://doi.org/10.1117/12.2633111
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
Previous approaches for achieving asymmetric transmission (AT) of light rely on nonreciprocal systems, which are limited to having external bias or high input powers. We show AT from a metasurface comprising dielectric nanogratings on two sides of a silicon nitride membrane. The proposed metagrating provides wideband AT over multiple operational windows, and we demonstrate that such metasurfaces can be realized using both noble plasmonic metals and chalcogenide phase change materials to achieve reconfigurable AT. The proposed structure has various applications, from enhancing efficiencies in photovoltaic systems to tunable isolators and electromagnetic shielding.
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Abbas Sheikh Ansari, Ashwin K. Iyer, Behrad Gholipour, and Joshua Perkins "Reconfigurable asymmetric transmission through all-dielectric metagratings (Conference Presentation)", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121951E (3 October 2022); https://doi.org/10.1117/12.2633111
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KEYWORDS
Diffraction
Kerr effect
Solar energy
Telecommunications
Magnetism
Magneto-optics
Modulation
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