High-order harmonic generation in hexagonal nanoribbons

Abstract

The generation of high-order harmonics in finite, hexagonal nanoribbons is simulated. Ribbons with armchair and zig-zag edges are investigated by using a tight-binding approach with only nearest neighbor hopping. By turning an alternating on-site potential off or on, the system describes for example graphene or hexagonal boron nitride, respectively. The incoming laser pulse is linearly polarized along the ribbons. The emitted light has a polarization component parallel to the polarization of the incoming field. The presence or absence of a polarization component perpendicular to the polarization of the incoming field can be explained by the symmetry of the ribbons. Characteristic features in the harmonic spectra for the finite ribbons are analyzed with the help of the band structure for the corresponding periodic systems.

12 pages, 6 figures

References in corpus (2)

• Impact of the electronic band structure in high-harmonic generation spectra of solids
• High-order harmonic generation from gapped graphene: perturbative response and transition to non-perturbative regime

Cited by in corpus (4)

• Extended high-harmonic spectra through cascade resonance in confined quantum systems
• Topological edge-state contributions to high-order harmonic generation in finite flakes
• Edge-state influence on high-order harmonic generation in topological nanoribbons
• High-harmonic spectra of hexagonal nanoribbons from real-space time-dependent Schrödinger calculations