Intra- and intercycle interferences in XUV+ IR ionization

GRAMAJO, A A; DELLA PICCA, R; LOPEZ, SEBASTIÁN; ARBÓ, D G

Conferencia; Conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces; 2018

In this work, making use of a semiclassical model (SCM) [2,3,4], we study the angle-resolved energy distribution of photoelectron for the case that both fields are linearly polarized in the same direction. We thoroughly analyze and characterize two different emission regions in the angle-energy domain: the parallel-like and the perpendicular-like regions. In the former, two classical electron trajectories per optical cycle contribute to the (intracycle) interference pattern which modulates the sidebands stemming from the (intercycle) interference of the electron trajectories at different optical cycles. Whereas in the perpendicular-like region there are four classical trajectories per optical cycle contributing to the intracycle factor.