Nonperturbative harmonic generation in graphene from intense midinfrared pulsed light

Marco Taucer, TJ Hammond, Paul Corkum, Giulio Vampa, C Couture, Nicolas Thire, B Schmidt, F Legare, Hakan Selvi, Nawapong Unsuree, Bruce Hamilton, Tim Echtermeyer, Melissa Anne Denecke

Research output: Contribution to journalArticlepeer-review

446 Downloads (Pure)

Abstract

In solids, high harmonic radiation arises from the sub-cycle dynamics of electrons and holes under the action of an intense laser field. The strong field regime opens new opportunities to understand and control carrier dynamics on ultrafast time scales, including the coherent dynamics of quasiparticles such as massless Dirac fermions. Here, we irradiate monolayer and few-layer graphene with intense infrared light to produce non-perturbative harmonics of the fundamental up to the 7th order. We find that the polarization dependence shows surprising agreement with gas phase harmonics. Using a two-band model, we explore the nonlinear current due to electrons near the Dirac points, and we discuss the interplay between intraband and interband contributions to the harmonic spectrum. This interplay opens new opportunities to access ultrafast and strong-field physics of graphene.
Original languageEnglish
Article number195420
JournalPhysical Review B
Volume96
Early online date13 Nov 2017
DOIs
Publication statusPublished - 2017

Research Beacons, Institutes and Platforms

  • National Graphene Institute
  • Dalton Nuclear Institute

Fingerprint

Dive into the research topics of 'Nonperturbative harmonic generation in graphene from intense midinfrared pulsed light'. Together they form a unique fingerprint.

Cite this