Direct S-matrix calculation for diffractive structures and metasurfaces
Abstract
The paper presents a derivation of analytical components of S-matrices for arbitrary planar diffractive structures and metasurfaces in the Fourier domain. Attained general formulas for S-matrix components can be applied within both formulations in the Cartesian and curvilinear metric. A numerical method based on these results can benefit from all previous improvements of the Fourier domain methods. In addition, we provide expressions for S-matrix calculation in case of periodically corrugated layers of 2D materials, which are valid for arbitrary corrugation depth-to-period ratios. As an example the derived equations are used to simulate resonant grating excitation of graphene plasmons and an impact of silica interlayer on corresponding reflection curves.
Cite
@article{arxiv.1712.08361,
title = {Direct S-matrix calculation for diffractive structures and metasurfaces},
author = {Alexey A. Shcherbakov and Yury V. Stebunov and Denis F. Baidin and Thomas Kampfe and Yves Jourlin},
journal= {arXiv preprint arXiv:1712.08361},
year = {2018}
}
Comments
21 pages, 5 figures