Universal metamaterial absorbe
Abstract
We propose a design for an universal absorber, characterized by a resonance frequency that can be tuned from visible to microwave frequencies independently of the choice of the metal and the dielectrics involved. An almost resonant perfect absorption up to 99.8 % is demonstrated at resonance for all polarization states of light and for a very wide angular aperture. These properties originate from a magnetic Fabry-Perot mode that is confined in a dielectric spacer of thickness by a metamaterial layer and a mirror. An extraordinary large funneling through nano-slits explains how light can be trapped in the structure. Simple scaling laws can be used as a recipe to design ultra-thin perfect absorbers whatever the materials and the desired resonance wavelength, making our design truly universal.
Cite
@article{arxiv.1603.08684,
title = {Universal metamaterial absorbe},
author = {Rafik Smaali and Fatima Omei and Antoine Moreau and Thierry Taliercio and Emmanuel Centeno},
journal= {arXiv preprint arXiv:1603.08684},
year = {2016}
}