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arXiv · 2203.13363

Diverse surface waves supported by bianisotropic metasurfaces

Oubo You·Wenlong Gao·Yachao Liu·Yuanxiang Jiang·Shuang Zhang
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Abstract

Surface waves supported by structured metallic surfaces, i.e. metasurfaces, have drawn wide attention recently. They are promising for various applications ranging from integrated photonic circuits to imaging and bio-sensing in various frequency regimes. In this work, we show that surface states with diverse polarization configurations can be supported by a metasurface consisting of a single layer of bianisotropic metamaterial elements. The structure possesses D2d symmetry, which includes mirror symmetry in the xz and yz plane, and C2 rotational symmetry along y = +-x axis. Due to this unique symmetry, the metasuface supports both transverse electric (TE) and transverse magnetic (TM) waves along kx and ky directions, while a purely longitudinal mode and an elliptically polarized transverse electromagnetic (TEM) mode along ky = +-kx directions. The versatility of the surface modes on the metasurface may lead to new surface wave phenomena and device applications.

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Oubo You, Wenlong Gao, Yachao Liu, Yuanxiang Jiang, Shuang Zhang. 2022-03-23. Diverse surface waves supported by bianisotropic metasurfaces. https://doi.org/10.37188/co.2021-0098

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