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Time interfaces in bianisotropic media
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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13
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Physical Review Research, Volume 6, issue 1
Abstract
Wave phenomena in bianisotropic media have been broadly scrutinized in classical electrodynamics because these media offer additional degrees of freedom to engineer electromagnetic waves. However, the majority of investigations concerning such systems have so far been limited to stationary (time-invariant) media. Temporally varying the magnetoelectric coupling manifesting bianisotropy engenders a unique prospect to manipulate wave-matter interactions in new ways. In this paper, we theoretically contemplate electromagnetic effects in weakly dispersive bianisotropic media of all classes when the corresponding magnetoelectric coupling parameter suddenly jumps in time, creating a time interface in spatially uniform bianisotropic media. We investigate scattering effects at such time interfaces, revealing novel polarization- and direction-dependent phenomena. Some of these phenomena are validated through the use of simulation software. We anticipate that our work paves the road for further exploration of time-varying bianisotropic metamaterials (metasurfaces) and bianisotropic photonic time crystals, thus opening up interesting possibilities to control wave polarization and amplitude in reciprocal and nonreciprocal manners.
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Publisher Copyright: © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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Mirmoosa, M S, Mostafa, M H, Norrman, A & Tretyakov, S A 2024, 'Time interfaces in bianisotropic media', Physical Review Research, vol. 6, no. 1, 013334. https://doi.org/10.1103/PhysRevResearch.6.013334