| Autor: |
Grande, M., Vincenti, M. A., Stomeo, T., Bianco, G. V., de Ceglia, D., Akozbek, N., Petruzzelli, V., Bruno, G., De Vittorio, M., Scalora, M., Orazio, A. D |
| Rok vydání: |
2014 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1364/OE.22.031511 |
| Popis: |
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. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
