Nonreciprocal Huygens' Metasurfaces Based on Bound States in the Continuum
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en
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3
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17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023, pp. 229-231, International congress on advanced electromagnetic materials in microwaves and optics
Abstract
Magneto-optical effects are typically very weak in the optical spectrum, and there- fore, nonreciprocal devices based on them are very bulky. We demonstrate that optical metasurfaces supporting quasi-bound states in the continuum provide a powerful way for achieving strong nonreciprocal responses in a sub-wavelength geometry. Using the multi-mode temporal coupled-mode theory, we synthesize and analyze a nonreciprocal metasurface with Huygens' meta-atoms based on conventional ferrite materials exhibiting nearly-unity contrast in transmission for circularly polarized light.Description
Publisher Copyright: © 2023 IEEE.
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Manez-Espina, L M, Faniayeu, I, Asadchy, V & Diaz-Rubio, A 2023, Nonreciprocal Huygens' Metasurfaces Based on Bound States in the Continuum. in 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023. International congress on advanced electromagnetic materials in microwaves and optics, IEEE, pp. 229-231, International Congress on Artificial Materials for Novel Wave Phenomena, Chania, Greece, 11/09/2023. https://doi.org/10.1109/Metamaterials58257.2023.10289179