Third Harmonic THz Generation from Graphene in a Parallel-Plate Waveguide

Abstract

Graphene as a zero-bandgap two-dimensional semiconductor with a linear electron band dispersion near the Dirac points has the potential to exhibit very interesting nonlinear optical properties. In particular, third harmonic generation of terahertz radiation should occur due to the nonlinear relationship between the crystal momentum and the current density. In this work, we investigate the terahertz nonlinear response of graphene inside a parallel-plate waveguide. We optimize the plate separation and Fermi energy of the graphene to maximize third harmonic generation, by maximizing the nonlinear interaction while minimizing the loss and phase mismatch. The results obtained show an increase by more than a factor of 100 in the power efficiency relative to a normal-incidence configuration for a 2 terahertz incident field.

References in corpus (7)

• Electronic transport in two dimensional graphene
• Strong nonlinear optical response of graphene flakes measured by four-wave mixing
• Drude Conductivity of Dirac Fermions in Graphene
• Non-linear electromagnetic response of graphene
• Third order nonlinearity of graphene: effects of phenomenological relaxation and finite temperature
• High harmonic generation in undoped graphene: Interplay of inter- and intraband dynamics
• Nonlinear Response of Bilayer Graphene at Terahertz Frequencies

Cited by in corpus (2)

• The effects of microscopic scattering on terahertz third harmonic generation in monolayer graphene
• Electron Transmission Across Normal Metal-Strained Graphene-Normal Metal Junctions