Graphene hyperlens for terahertz radiation

Abstract

We propose a graphene hyperlens for the terahertz (THz) range. We employ and numerically examine a structured graphene-dielectric multilayered stack that is an analogue of a metallic wire medium. As an example of the graphene hyperlens in action we demonstrate an imaging of two point sources separated with distance ${\lambda }_0/5$. An advantage of such a hyperlens as compared to a metallic one is the tunability of its properties by changing the chemical potential of graphene. We also propose a method to retrieve the hyperbolic dispersion, check the effective medium approximation and retrieve the effective permittivity tensor.

5 pages, 5 figures

References in corpus (9)

• 30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes
• Plasmonics in graphene at infra-red frequencies
• Optical nano-imaging of gate-tuneable graphene plasmons
• Optical Hyperlens: Far-field imaging beyond the diffraction limit
• Optical properties of graphene
• A comparison of graphene, superconductors and metals as conductors for metamaterials and plasmonics
• Terahertz and Infrared Spectroscopy of Gated Large-Area Graphene
• Sub-wavelength imaging by wire media
• Sub-wavelength imaging at infrared frequencies using an array of metallic nanorods

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• Dark-field hyperlens: Super-resolution imaging of weakly scattering objects
• Photonic density of states enhancement in finite graphene multilayers
• Terahertz optically tunable dielectric metamaterials without microfabrication
• Hyperbolic Metamaterial Feasible for Fabrication with Direct Laser Writing Processes
• Non-local quantum gain facilitates loss compensation and plasmon amplification in graphene hyperbolic metamaterials
• Constructing Hyperbolic Metamaterials with Arbitrary Medium
• Slow light mediated by mode topological transitions in hyperbolic waveguides