What is the nature of tunnelling? This yet unanswered question is as pertinent today as it
was at the dawn of quantum mechanics. This article presents a cross section of current …

We determine the ionization time in tunneling ionization by an elliptically polarized light
pulse relative to its maximum. This is achieved by a full quantum propagation of the electron …

A parallel quantum electron and nuclei wave packet computer code, lzh-dicp, has been
developed to study laser-atom-molecule interaction in the nonperturbative regime with …

Electronic processes within atoms and molecules reside on the timescale of attoseconds.
Recent advances in the laser-based pump-probe interrogation techniques have made …

We investigate tunneling ionization of a single active electron with a strong and short laser
pulse, circularly polarized. With the recently proposed backpropagation method, we can …

Tunnel ionization belongs to the fundamental processes of atomic physics. The so-called
two-step model, which describes the ionization as instantaneous tunneling at the electric …

Interaction of a strong laser pulse with matter transfers not only energy but also linear
momentum of the photons. Recent experimental advances have made it possible to detect …

The fragmentation of the H 2+ molecular ion in 25-fs, 800-nm laser pulses in the intensity
range 0.05–0.5 PW/cm 2 is investigated by means of wave-packet propagation calculations …

We investigate tunneling ionization of a model helium atom in a strong circularly polarized
short laser pulse using the classical backpropagation method and compare ten different …

Calculating strong-field, momentum-resolved photoelectron spectra (PES) from numerical
solutions of the time-dependent Schrödinger equation (TDSE) is a very demanding task due …