Signatures of stabilization in the angle-resolved photoemission by an ultrashort intense XUV laser pulse

Abstract

We explore features of stabilization in the angle-resolved spectra of photoelectrons when ground-state atomic hydrogen is exposed to an intense ($\ensuremath{\sim}{10}^{18} \mathrm{W}/{\mathrm{cm}}^{2}$) linearly polarized ultrashort XUV pulse. In this regime, atomic stabilization can be traced to the temporal destructive interference between wave packets released by the intense field at different instants of time. By a comparison between the numerical solution of the time-dependent Schr\"odinger equation and a semianalytical model, we can identify the observed oscillations in the momentum distribution and the suppression of photoemission into the laser polarization direction as a direct result of stabilization. We also explore the effect of nondipole corrections on the angular distribution.