Carrier-envelope-phase-induced asymmetries in double ionization of helium by an intense few-cycle XUV pulse

Authors

Jean Marcel Ngoko Djiokap, University of Nebraska-LincolnFollow
N. L. Manakov, Voronezh State University, RussiaFollow
A. V. Meremianin, Voronezh State UniversityFollow
Anthony F. Starace, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

11-2013

Citation

PHYSICAL REVIEW A 88, 053411 (2013)

Comments

Copyright © 2013 American Physical Society. Used by permission.

Abstract

The carrier-envelope-phase (CEP) dependence of electron angular distributions in double ionization of He by an arbitrarily polarized, few-cycle, intense XUV pulse is formulated using perturbation theory (PT) in the pulse amplitude. Owing to the broad pulse bandwidth, interference of first- and second-order PT amplitudes produces asymmetric angular distributions sensitive to the CEP. The PT parametrization is shown to be valid by comparing with results of solutions of the full-dimensional, two-electron time-dependent Schrödinger equation for the case of linear polarization.