Nonreciprocal Huygens' Metasurfaces Based on Bound States in the Continuum

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.

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10.1109/Metamaterials58257.2023.10289179

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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

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https://urn.fi/URN:NBN:fi:aalto-202401041043

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[article-cris] Sähkötekniikan korkeakoulu / ELEC

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Nonreciprocal Huygens' Metasurfaces Based on Bound States in the Continuum

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