Achieving bi-anisotropic coupling through uniform temporal modulations without inversion symmetry disruption
Temporal modulations provide a new approach for realizing metamaterials. In this study, through the imposition of uniform temporal modulations, we achieve two types of reciprocal bi-anisotropic metamaterials. Notably, these achievements do not rely on any spatial modulation, preserving inversion sym...
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Veröffentlicht in: | Optics letters 2024-05, Vol.49 (9), p.2493-2496 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Temporal modulations provide a new approach for realizing metamaterials. In this study, through the imposition of uniform temporal modulations, we achieve two types of reciprocal bi-anisotropic metamaterials. Notably, these achievements do not rely on any spatial modulation, preserving inversion symmetry at any instantaneous time. This stands in sharp contrast to the scenario of traditional bi-anisotropic metamaterials, where the disruption of inversion symmetry by spatial arrangements is necessary. Conditions for realizing nonzero bi-anisotropic coupling are discussed and verified through full-wave simulations. Our work will stimulate research in the field of temporal bi-anisotropic metamaterials, as well as the application of temporal modulations in manipulating photonic spin angular momentum. |
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ISSN: | 0146-9592 1539-4794 |
DOI: | 10.1364/OL.518816 |