Quadrupolar susceptibility modeling of substrated metasurfaces with application to the generalized Brewster effect
Optics
2023-07-19 v1
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.
Keywords
Cite
@article{arxiv.2302.13835,
title = {Quadrupolar susceptibility modeling of substrated metasurfaces with application to the generalized Brewster effect},
author = {Ville Tiukuvaara and Olivier J. F. Martin and Karim Achouri},
journal= {arXiv preprint arXiv:2302.13835},
year = {2023}
}