Control of electronic dynamics visualized by angularly resolved photoelectron spectra: A dynamical simulation with an IR pump and XUV attosecond-pulse-train probe

A dynamical simulation via a coupled-equation scheme that includes the ionization continua and field-induced effects describes a pump-probe experiment that monitors ultrafast electronic dynamics in LiH. The ionizing XUV attosecond pulse train that is included in the simulation is used as a frequency filter. By tuning the time interval between the attosecond pulses of the train to a beating frequency of the wave packet induced by the IR pump pulse we characterize the changing spatial localization from one end of the molecule to the other, reflecting the interferences of the nonstationary electronic density.