Logo image
Back
Classical calculation of high-order harmonic generation of atomic and molecular gases in intense laser fields
Journal article   Open access   Peer reviewed

Classical calculation of high-order harmonic generation of atomic and molecular gases in intense laser fields

Chaohong Lee, Yiwu Duan, Wing-Ki Liu, Jian-Min Yuan, Lei Shi, Xiwen Zhu and Kelin Gao
Physical review. A, Atomic, molecular, and optical physics, v 64(4), pp 434101-4341010
01 Mar 2001
DOI: https://doi.org/10.1103/PhysRevA.64.043410
url
http://arxiv.org/abs/physics/0103007View
SubmittedOpen Access (License Unspecified),  Open

Abstract

Physics - Atomic Physics
Phys. Rev. A 64, 043410 (2001) Based upon our previous works (Eur.Phys.J.D 6, 319(1999); Chin.Phys.Lett. 18, 236(2001)), we develop a classical approach to calculate the high-order harmonic generation of the laser driven atoms and molecules. The Coulomb singularities in the system have been removed by a regularization procedure. Action-angle variables have been used to generate the initial microcanonical distribution which satisfies the inversion symmetry of the system. The numerical simulation show, within a proper laser intensity, a harmonic plateau with only odd harmonics appears. At higher intensities, the spectra become noisier because of the existence of chaos. With further increase in laser intensity, ionization takes place, and the high-order harmonics disappear. Thus chaos introduces noise in the spectra, and ionization suppresses the harmonic generation, with the onset of the ionization follows the onset of chaos.

Metrics

10 Record Views
8 citations in Web of Science
5 citations in Scopus

Details

InCites Highlights

Data related to this publication, from InCites Benchmarking & Analytics tool:

Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Optics
Physics, Atomic, Molecular & Chemical
Logo image