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arXiv · 2302.13835

Quadrupolar susceptibility modeling of substrated metasurfaces with application to the generalized Brewster effect

Ville Tiukuvaara·Olivier J. F. Martin·Karim Achouri
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Abstract

We derive generalized sheet transition conditions (GSTCs) including dipoles and quadrupoles, using generalized functions (distributions). This derivation verifies that the GSTCs are valid for metasurfaces in non-homogeneous environments, such as for practical metasurfaces fabricated on a substrate. The inclusion of quadrupoles and modeling of spatial dispersion provides additional hyper-susceptibility components which serve as degrees of freedom for wave transformations. We leverage them to demonstrate a generalized Brewster effect with multiple angles of incidence at which reflection is suppressed, along with an ``anti-Brewster'' effect where transmission is suppressed.

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Ville Tiukuvaara, Olivier J. F. Martin, Karim Achouri. 2023-02-27. Quadrupolar susceptibility modeling of substrated metasurfaces with application to the generalized Brewster effect. https://doi.org/10.1364/oe.488529

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