Attosecond Streaking in the Low-Energy Region as a Probe of Rescattering

Authors

Ming-Hui Xu, Peking University
Liang-You Peng, Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, BeijingFollow
Zheng Zhang, Peking University
Qihuang Gong, Department of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, BeijingFollow
Xiao-Min Tong, University of Tsukuba, JapanFollow
Evgeny A. Pronin, University of Nebraska-LincolnFollow
Anthony F. Starace, University of Nebraska-LincolnFollow

Date of this Version

10-2011

Comments

Published in PHYSICAL REVIEW LETTERS 107 (2011), 183001; doi: 10.1103/PhysRevLett.107.183001 Copyright (c) 2011 American Physical Society. Used by permission.

Abstract

The dynamics of low-energy photoelectrons (PEs) ionized by a single attosecond pulse in the presence of an intense infrared (IR) laser field is investigated. Whereas attosecond streaking usually involves momentum shifts of high-energy PEs, when PEs have low initial kinetic energies, the IR field can control the continuum-electron dynamics by inducing PE scattering from the residual ion. A semiclassical model is used to show that particular PE trajectories in the continuum involving electron-ion scattering explain the interference patterns exhibited in the low-energy PE spectrum. We confirm the effects of the trajectories by means of a full quantum simulation.