Graphene-based absorber exploiting guided mode resonances in one-dimensional gratings

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 (~2.3%). Experimental results confirm this behavior showing CVD graphene absorbance peaks up to about 40% over narrow bands of a few nanometers. The simple and flexible design points to a way to realize innovative, scalable and easy-tofabricate graphene-based optical absorbers.


Tutti gli autori

  • 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.

Titolo volume/Rivista

Optics express


Anno di pubblicazione

2014

ISSN

1094-4087

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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