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arXiv · 2212.01501

Bulk ReSe2: record high refractive index and biaxially anisotropic material for all-dielectric nanophotonics

Alexey Mikhin·Anton Shubnic·Tatyana Ivanova·Ivan Shelykh·Anton Samusev·Ivan Iorsh
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Abstract

We show that bulk rhenium diselenide, ReSe2 is characterized by record high value of the refractive index exceeding 5 in near-infrared frequency range. We use back focal plane reflection spectroscopy to extract the components of the ReSe2 permittivity tensor and reveal its extreme biaxial anisotropy. We also demonstrate the good agreement between the experimental data and the predictions of the density functional theory. The combination of the large refractive index and giant optical anisotropy makes ReSe2 a perspective material for all-dielectric nanophotonics in the near-infrared frequency range.

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Alexey Mikhin, Anton Shubnic, Tatyana Ivanova, Ivan Shelykh, Anton Samusev, Ivan Iorsh. 2022-12-03. Bulk ReSe2: record high refractive index and biaxially anisotropic material for all-dielectric nanophotonics. https://arxiv.org/abs/2212.01501

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