Deflections of photoelectron classical trajectories in screened Coulomb potentials of H2+**Project supported by the National Natural Science Foundation of China (Grant Nos. 11104180, 11175120, 11121504, and 11322438) and the Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China (Grant No. 131010).

Abstract

The photoelectron momentum distribution of in circularly polarized laser fields is studied based on classical trajectory calculations. We screen Coulomb potentials at different radii, and trace trajectories of an ensemble of electrons in such screened Coulomb potentials and circularly polarized laser fields. Simulations show that electron trajectories are bent by Coulomb fields, resulting in the laser-intensity-dependent drift of photoelectron momentum distributions in the laser polarization plane. This study intuitively explains how Coulomb potentials modify photoelectron momenta.