This paper has been prepared by the Symphony collaboration (University of Warsaw,
Uniwersytet Jagielloński, DESY/CNR and ICFO) on the occasion of the 25th anniversary of …

Experimental advances with laser intensities above 1 TW/cm 2, with pulse durations
between roughly 50 and 5 fs, have led to the discovery of new atomic effects that include …

Using a three-dimensional classical ensemble model, we investigate the dependence of
relative frequency and relative initial phase for nonsequential double ionization (NSDI) of …

In this paper, we briefly review a series of recent pioneering experiments on few-photon-
induced multiple fragmentation of atoms and molecules performed at the free electron laser …

Using a classical ensemble method, we revisit the topic of recollision and nonsequential
double ionization with elliptically polarized laser fields. We focus on how the recollision …

Elliptically polarized laser fields provide a new channel for access to strong-field processes
that are either suppressed or not present under linear polarization. Quantum theory is mostly …

Using a classical ensemble model, we investigated the dependence of nonsequential
double ionization (NSDI) on the relative phase driven by few-cycle counter-rotating two-color …

When intense laser pulses release electrons nonsequentially, the time delay between the
last recollision and the subsequent ionization may last longer than what is expected from a …

Two-electron correlated spectra of nonsequential double ionization below laser-intensity
threshold are known to exhibit back-to-back scattering of the electrons, ie, the anticorrelation …

We analyze the dynamical processes behind delayed double ionization of atoms subjected
to strong laser pulses. Using reduced models, we show that these processes are a signature …