Intrinsic strong light-matter coupling with self-hybridized bound states in the continuum in van der Waals metasurfaces

Thomas Weber; Lucca Kühner; Luca Sortino; Amine Ben Mhenni; Nathan Wilson; Julius Kühne; Jonathan Finley; Stefan Maier; Andreas Tittl

doi:10.1117/12.2676725

4 October 2023 Intrinsic strong light-matter coupling with self-hybridized bound states in the continuum in van der Waals metasurfaces

Thomas Weber, Lucca Kühner, Luca Sortino, Amine Ben Mhenni, Nathan Wilson, Julius Kühne, Jonathan Finley, Stefan Maier, Andreas Tittl

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Proceedings Volume PC12646, Metamaterials, Metadevices, and Metasystems 2023; PC1264605 (2023) https://doi.org/10.1117/12.2676725
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Strong instrinsic light-matter coupling was realized within nanostructured bulk flakes of the transition metal dichalcogenide tungsten disulfide. WS2 metasurfaces driven by the concept of symmetry-protected bound states in the continuum (BIC) show sharp resonances, which are tuned over the exciton leading to an, in transmission measurements resolved, anti-crossing pattern with a Rabi splitting of 116 meV. The BIC-inherent control over the systems radiative loss rate leads to a tunable coupling strength, independent of material-intrinsic losses.

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Thomas Weber, Lucca Kühner, Luca Sortino, Amine Ben Mhenni, Nathan Wilson, Julius Kühne, Jonathan Finley, Stefan Maier, and Andreas Tittl "Intrinsic strong light-matter coupling with self-hybridized bound states in the continuum in van der Waals metasurfaces", Proc. SPIE PC12646, Metamaterials, Metadevices, and Metasystems 2023, PC1264605 (4 October 2023); https://doi.org/10.1117/12.2676725

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KEYWORDS

Excitons

Absorption

Dispersion

Light-matter interactions

Nanostructuring

Polaritons

Transition metals

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