Generation of half-integer harmonics and efficient THz-to-visible frequency conversion in strained graphene

Marco Ornigotti, Luca Ornigotti, Fabio Biancalana

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Abstract

We study the generation of harmonics from graphene under the influence of an artificial magnetic field, generated via bending of a graphene flake. We show how the Landau level structure induced by the pseudomagnetic field breaks the centrosymmetry of graphene, thus allowing the generation of even harmonics. We also show that depending on the impinging pulse duration, the nonlinear signal does not only contain the integer harmonics of the impinging pulse but also its half-integer ones due to the peculiar square-root-like nature of Landau levels in graphene.

Original languageEnglish
Article number060801
JournalAPL Photonics
Volume6
Issue number6
Early online date1 Jun 2021
DOIs
Publication statusPublished - Jun 2021

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications

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