Gate-controlled mid-infrared light bending with aperiodic graphene nanoribbons array

Graphene plasmonic nanostructures enable subwavelength confinement of electromagnetic energy from the mid-infrared down to the terahertz frequencies. By exploiting the spectrally varying light scattering phase at the vicinity of the resonant frequency of the plasmonic nanostructure, it is possible t...

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Bibliographic Details
Published in:Nanotechnology 2015-03, Vol.26 (13), p.134002-7
Main Authors: Carrasco, Eduardo, Tamagnone, Michele, Mosig, Juan R, Low, Tony, Perruisseau-Carrier, Julien
Format: Article
Language:English
Subjects:
Angle of reflection
Arrays
Beams (radiation)
Graphene
Light beams
metamaterials
Nanostructure
plasmon
Plasmonics
Resonant frequencies
Terahertz frequencies
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Summary:Graphene plasmonic nanostructures enable subwavelength confinement of electromagnetic energy from the mid-infrared down to the terahertz frequencies. By exploiting the spectrally varying light scattering phase at the vicinity of the resonant frequency of the plasmonic nanostructure, it is possible to control the angle of reflection of an incoming light beam. We demonstrate, through full-wave electromagnetic simulations based on Maxwell equations, the electrical control of the angle of reflection of a mid-infrared light beam by using an aperiodic array of graphene nanoribbons, whose widths are engineered to produce a spatially varying reflection phase profile that allows for the construction of a far-field collimated beam towards a predefined direction.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/26/13/134002