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

Document Type

Article

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.