Floquet-Bloch states, quasienergy bands, and high-order harmonic generation for single-walled carbon nanotubes under intense laser fields

Han Hsu, L. E. Reichl

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

We study the electronic states and nonlinear motion of π electrons in an armchair nanotube driven by monochromatic intense laser fields with polarization parallel to the nanotube axis. The intensity and frequency (photon energy) of the applied laser fields are varied so their effect on the electrons can be understood. In each case, Floquet-Bloch theory is used to calculate the Floquet-Bloch states, quasienergy band, mean energy band, and electron current density. By summing up the current density of all occupied Floquet-Bloch states, the harmonic generation spectrum can be determined. We demonstrate that the deformation of quasienergy band and mean energy band is related to high-order harmonic generation. Only the states deviating from field-free eigenstates may contribute to high-order harmonic generation.

Original languageEnglish
Article number115406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number11
DOIs
StatePublished - 2006

Fingerprint

Dive into the research topics of 'Floquet-Bloch states, quasienergy bands, and high-order harmonic generation for single-walled carbon nanotubes under intense laser fields'. Together they form a unique fingerprint.

Cite this