Theory of metasurface based perfect absorbers
Abstract
Based on an analytic approach, we present a theoretical review on the absorption, scattering, and extinction of both dipole scatterers and regular arrays composed of such scatterers i.e., metasurfaces. Besides offering a tutorial by outlining the maximum absorption limit for electrically/magnetically resonant dipole particles/metasurfaces, we give an educative analytical approach to their analysis. Moreover, we put forward the analysis of two known alternatives in providing perfect absorbers out of electrically and or magnetically resonant metasurfaces; one is based on the simultaneous presence of both electric and magnetic responses in so called Huygens metasurfaces while the other is established upon the presence of a back reflector in so called Salisbury absorbers. Our work is supported by several numerical examples to clarify the discussions in each stage.
Keywords
Cite
@article{arxiv.1711.08203,
title = {Theory of metasurface based perfect absorbers},
author = {Rasoul Alaee and Mohammad Albooyeh and Carsten Rockstuhl},
journal= {arXiv preprint arXiv:1711.08203},
year = {2017}
}