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3 October 2022 Spin-full guided modes trapped by effective potentials in topological photonic metasurfaces
Svetlana Kiriushechkina, Anton Vakulenko, Daria A. Smirnova, Sriram Guddala, Filipp Komissarenko, Monica S. Allen, Jeffery W. Allen, Alexander B. Khanikaev
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Proceedings Volume PC12195, Metamaterials, Metadevices, and Metasystems 2022; PC121951R (2022) https://doi.org/10.1117/12.2633491
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States
Abstract
We demonstrate the emergence of a new class of guided modes in photonic metasurfaces with a gradient change of mass term across boundary between topological and trivial domains. These modes possess spin degeneracy and exhibit splitting in their quality factors due to spin-dependent radiative losses. In experiment we probe our spin-full guided modes by selectively exciting them with circularly polarized light of opposite handedness and we confirm significant difference in the radiative losses for selected k-vectors. Metasurfaces supporting these modes can be used for spin-full waveguiding and can find applications in integrated photonics due to the possibility of spin multiplexing.
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Svetlana Kiriushechkina, Anton Vakulenko, Daria A. Smirnova, Sriram Guddala, Filipp Komissarenko, Monica S. Allen, Jeffery W. Allen, and Alexander B. Khanikaev "Spin-full guided modes trapped by effective potentials in topological photonic metasurfaces", Proc. SPIE PC12195, Metamaterials, Metadevices, and Metasystems 2022, PC121951R (3 October 2022); https://doi.org/10.1117/12.2633491
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KEYWORDS
Silicon
Silicon photonics
Electron beam lithography
Integrated optics
Integrated photonics
Multiplexing
Signal attenuation
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