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 (4)

• 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

Cited by in corpus (5)

• Graphene Plasmonics for Terahertz to Mid-Infrared Applications
• Novel hyperbolic metamaterials based on multilayer graphene structures
• From surface to volume plasmons in hyperbolic metamaterials: General existence conditions for bulk high-k waves in metal-dielectric and graphene-dielectric multilayers
• Hyperbolic Metamaterial Feasible for Fabrication with Direct Laser Writing Processes
• Constructing Hyperbolic Metamaterials with Arbitrary Medium