Terahertz response of patterned epitaxial graphene

Abstract

We study the interaction between polarized terahertz (THz) radiation and micro-structured large-area graphene in transmission geometry. In order to efficiently couple the radiation into the two-dimensional material, a lateral periodic patterning of a closed graphene sheet by intercalation doping into stripes is chosen, yielding unequal transmittance of the radiation polarized parallel and perpendicular to the stripes. Indeed, a polarization contrast up to 20% is observed. The effect even increases up to 50% when removing graphene stripes in analogy to a wire grid polarizer. The polarization dependence is analyzed in a large frequency range from < 80 GHz to 3 THz, including the plasmon-polariton resonance. The results are in excellent agreement with theoretical calculations based on the electronic energy spectrum of graphene and the electrodynamics of the patterned structure.

References in corpus (15)

• The electronic properties of graphene
• Graphene Photonics and Optoelectronics
• Graphene plasmonics
• Manipulating infrared photons using plasmons in transparent graphene superlattices
• The electronic properties of bilayer graphene
• Quasi-free Standing Epitaxial Graphene on SiC by Hydrogen Intercalation
• Mid-infrared plasmons in scaled graphene nanostructures
• Significant Radiation Enhancement in Photoconductive Terahertz Emitters by Incorporating Plasmonic Contact Electrodes
• A Primer on Surface Plasmon-Polaritons in Graphene
• Plasmonics in Dirac systems: from graphene to topological insulators
• The quasi-free-standing nature of graphene on H-saturated SiC(0001)
• Intrinsic Terahertz Plasmons and Magnetoplasmons in Large Scale Monolayer Graphene
• How Graphene-like is Epitaxial Graphene? \\Quantum Oscillations and Quantum Hall Effect
• Unified description of the dc conductivity of monolayer and bilayer graphene at finite densities based on resonant scatterers
• Functional plasmonic nano-circuits with low insertion and propagation losses

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• Hyperbolic phonon-plasmon polaritons in a hBN-graphene van der Waals structure
• Manifestation of kinetic-inductance in spectrally-narrow terahertz plasmon resonances in thin-film Cd3As2