High-order harmonic generation by atoms in a few-cycle laser pulse: Carrier-envelope phase and many-electron effects

Authors

M. V. Frolov, Voronezh State University, RussiaFollow
N. L. Manakov, Voronezh State University, RussiaFollow
A. A. Silaev, Institute of Applied Physics, Russian Academy of Sciences
N. V. Vvedenskii, Institute of Applied Physics, Russian Academy of Sciences
Anthony F. Starace, University of Nebraska-LincolnFollow

Date of this Version

2-28-2011

Comments

Published in PHYSICAL REVIEW A 83, 021405(R) (2011). DOI: 10.1103/PhysRevA.83.021405 Copyright © 2011 American Physical Society. Used by permission.

Abstract

Analytic formulas describing high-order harmonic generation (HHG) by atoms in a short laser pulse are obtained quantum mechanically in the tunneling limit. These results provide analytic expressions of the three-step HHG scenario, as well as of the returning electron wave packet, in a few-cycle pulse. Our results agree well with those of numerical solutions of the time-dependent Schrödinger equation for the H atom, while for Xe they predict many-electron atomic dynamics features in few-cycle HHG spectra and significant dependence of these features on the carrier-envelope phase of a laser pulse.