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
Hauptverfasser: Wang, Neng, Feng, Fanghu, Ping Wang, Guo
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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.518816