The question of how long it takes a particle to tunnel through a potential barrier has been a
subject of intense theoretical debate for the last 80 years. In this decade of attosecond …

Photoelectron holography constitutes a powerful tool for the ultrafast imaging of matter, as it
combines high electron currents with subfemtosecond resolution, and gives information …

Strong-field physics is currently experiencing a shift towards the use of mid-IR driving
wavelengths. This is because they permit conducting experiments unambiguously in the …

The history and current status of the Keldysh theory of strong field ionization are reviewed.
The focus is on the fundamentals of the theory, its most important applications and those …

Resolving in time the dynamics of light absorption by atoms and molecules, and the
electronic rearrangement this induces, is among the most challenging goals of attosecond …

In the research area of strong-laser-field interactions and attosecond science, tunnelling of
an electron through the barrier formed by the electric field of the laser and the atomic …

We report the breakdown of the electric dipole approximation in the long-wavelength limit in
strong-field ionization with linearly polarized few-cycle mid-infrared laser pulses at …

We demonstrate how a scheme called advanced dual-chirped optical parametric
amplification (DC-OPA) that employs two kinds of nonlinear crystal (BiB3O6 and MgO-doped …

Experiments on atoms in intense laser pulses and the corresponding exact ab initio
solutions of the time-dependent Schrödinger equation (TDSE) yield photoelectron spectra …

We measure high resolution photoelectron angular distributions (PADs) for above-threshold
ionization of xenon atoms in infrared laser fields. Based on the Ammosov-Delone-Krainov …