DocumentCode :
1586002
Title :
Graphene-based optical absorbers
Author :
Grande, M. ; Vincenti, M.A. ; Stomeo, T. ; Bianco, G.V. ; de Ceglia, D. ; Akozbek, N. ; Petruzzelli, V. ; Bruno, G. ; De Vittorio, M. ; Scalora, M. ; D´Orazio, A.
Author_Institution :
Dipt. di Ing. Elettr. e dell´Inf., Politec. di Bari, Bari, Italy
fYear :
2015
Firstpage :
1
Lastpage :
4
Abstract :
The absorption of electromagnetic waves has always attracted a large interest because of its cross-the-board nature that spans from microwave to optical frequencies in both linear and nonlinear regimes. At the same time, the experimental isolation of bi-dimensional (2D) materials has recently unveiled how single layers might also be very attractive because of their unprecedented optical and absorption properties. In particular, graphene, a 2D version of graphite, exhibits a remarkably high absorption value (~2.3%) in the visible range [1] when compared to metals or dielectric materials. In this paper, we will review and illustrate the quest for the enhanced absorption in photonic nanostructures that incorporate monolayer and multilayer graphene sheets emphasizing the difference in terms of configurations and strategies proposed in literature. Then, we will detail the optical performance of graphene-based one-dimensional (1D) gratings that support guided mode resonances showing how it is possible to tune theoretically and experimentally their total absorption ranging from 2.3% to perfect absorption by means of metallic and dielectric reflectors or engineered super cells.
Keywords :
diffraction gratings; graphene; light absorption; monolayers; nanostructured materials; optical multilayers; 1D gratings; C; dielectric reflectors; engineered super cells; enhanced absorption; graphene-based optical absorbers; guided mode resonances; metallic reflectors; monolayer; multilayer graphene sheets; photonic nanostructures; Absorption; Graphene; Gratings; Nonlinear optics; Optical device fabrication; Optical reflection; Optical sensors; graphene; guided mode resonances; optical absorption;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Transparent Optical Networks (ICTON), 2015 17th International Conference on
Conference_Location :
Budapest
Type :
conf
DOI :
10.1109/ICTON.2015.7193344
Filename :
7193344
Link To Document :
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