CONICET | Buscador de Institutos y Recursos Humanos

When an intense short laser pulse interacts with an atom ionizing it, the photoelectron spectra present severalstructures that can be understood as double slit interferences in the time domain, namely intra- and inter-cycleinterferences [1]. This type of structures are formed by electrons that emerge from the atom and follows directlyto detector. There is another type of structures that requires interference of former direct electrons with otherthat interact with the parent core. In a classical picture, the latter returns to the parent ion driven by the lasereld and rescatters o to the detector. It is well known that a short range potential is sucient to understand therescattering rings at high energy, formed by very hard interaction among electron and ion [2]. Other structures canbe explained only when long range coulombic interactions take place. This type of structures can be interpreted asholograms, i.e. the interference pattern between the direct (reference) and the rescattered (signal beam) electrons.In this way, the information of the interaction is encoded in the interference pattern between the reference andthe signal [3].In this work we present a theoretical analysis of interferences using a numerical solution of the time dependentSchrodinger equation (TDSE) and semiclassical approaches, namely, quantum trajectory Monte Carlo (QTMC)and the semiclassical two step model (SCTS) [4]. We analyze the ionization of atomic hydrogen to characterizethe role that the long range Coulomb interaction plays in the holographic structures. Particularly, we focus ouranalysis for very few cycle laser pulses allowing ionization in some parts, to turn on and o dierent kind ofinterferences. With semiclassical approaches we can examine the trajectories that lead to dierent nal conditionsand get a deeper understanding of the electron kinematics associated to holographic structures.