Graphene-based absorber exploiting guided mode resonances in one-dimensional gratings
Optics
2015-06-23 v1
Abstract
A one-dimensional dielectric grating, based on a simple geometry, is proposed and investigated to enhance light absorption in a monolayer graphene exploiting guided mode resonances. Numerical findings reveal that the optimized configuration is able to absorb up to 60% of the impinging light at normal incidence for both TE and TM polarizations resulting in a theoretical enhancement factor of about 26 with respect to the monolayer graphene absorption (about 2.3%). Experimental results confirm this behaviour showing CVD graphene absorbance peaks up to about 40% over narrow bands of few nanometers. The simple and flexible design paves the way for the realization of innovative, scalable and easy-to-fabricate graphene-based optical absorbers.
Cite
@article{arxiv.1410.2102,
title = {Graphene-based absorber exploiting guided mode resonances in one-dimensional gratings},
author = {M. Grande and M. A. Vincenti and T. Stomeo and G. V. Bianco and D. de Ceglia and N. Akozbek and V. Petruzzelli and G. Bruno and M. De Vittorio and M. Scalora and A. D Orazio},
journal= {arXiv preprint arXiv:1410.2102},
year = {2015}
}