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

Document Type

Article

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.