Induced by coherent THz-radiation high harmonics generation in bilayer graphene at high Fermi energies

Abstract

The higher order harmonic generation process in the nonperturbative regime at the interaction of coherent electromagnetic radiation with the AB-stacked bilayer graphene at high Fermi energies is considered. The applied coherent low-frequency radiation field in the high Fermi energy zone of electrons excludes the interband transitions enhancing high harmonic rates. The developed microscopic nonlinear quantum theory for charged carriers interaction with a strong pump wave is valid near the Dirac points of the Brillouin zone. The Liouville-von Neumann equation for the density matrix in the multiphoton excitation regime is solved both analytically and numerically. Based on the numerical solutions, we examine the rates of higher-order harmonics of the pump wave of arbitrary polarization. Obtained results show that bilayer graphene can serve as an effective material for the generation of higher-order harmonics from THz to the mid-IR domain of frequencies at the pump wave moderate intensities.

13 pages, 6 figures. arXiv admin note: substantial text overlap with arXiv:2007.02724, arXiv:1905.08016, arXiv:1905.08189

References in corpus (10)

• Electric Field Effect in Atomically Thin Carbon Films
• The electronic properties of graphene
• Acoustic phonon scattering limited carrier mobility in 2D extrinsic graphene
• Electronic states and Landau levels in graphene stacks
• Dependence of band structures on stacking and field in layered graphene
• Transport in Bilayer Graphene: Calculations within a self-consistent Born approximation
• Third harmonic generation in graphene and few-layer graphite films
• Electron-phonon heat transfer in monolayer and bilayer graphene
• Self-probing of Molecules with High Harmonic Generation
• Radiation effects on the electronic structure of bilayer graphene