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

Abstract

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 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.

11 pages, 4 figures

References in corpus (11)

• Boron nitride substrates for high-quality graphene electronics
• Suspended Graphene: a bridge to the Dirac point
• Graphene plasmonics
• Dielectric function, screening, and plasmons in 2D graphene
• Graphene Plasmonics for Terahertz to Mid-Infrared Applications
• Manipulating infrared photons using plasmons in transparent graphene superlattices
• Dynamical polarization of graphene at finite doping
• Graphene field effect transistors as room-temperature Terahertz detectors
• Controlling electron-phonon interactions in graphene at ultra high carrier densities
• Mid-infrared plasmons in scaled graphene nanostructures
• Anomalous Reflection Phase of Graphene Plasmons and its Influence on Resonators