Coherent and Broadband Enhanced Optical Absorption in Graphene
2013; American Chemical Society; Volume: 7; Issue: 6 Linguagem: Inglês
10.1021/nn4012253
ISSN1936-086X
AutoresGiuseppe Pirruccio, L. Martı́n-Moreno, Gabriel Lozano, Jaime Gómez Rivas,
Tópico(s)Photonic and Optical Devices
ResumoWe experimentally demonstrate a broadband enhancement of the light absorption in graphene over the whole visible spectrum. This enhanced absorption is obtained in a multilayer structure by using an Attenuated Total Reflectance (ATR) configuration and it is explained in terms of coherent absorption arising from interference and dissipation. The interference mechanism leading to the phenomenon of coherent absorption allows for its precise control by varying the refractive index and/or thickness of the medium surrounding the graphene.
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