This review article focuses on imaging and controlling ultrafast dynamics of the hydrogen
molecule and its cation, initiated by ultrashort laser pulses. We discuss the mechanisms …

The first hundred attoseconds of the electron dynamics during strong field tunneling
ionization are investigated. We quantify theoretically how the electron's classical trajectories …

Bijvoet's method, which makes use of anomalous x-ray diffraction or dispersion, is the
standard means of directly determining the absolute (stereochemical) configuration of …

Due to their very nature, ultrafast phenomena are often accompanied by the occurrence of
nonadiabatic effects. From a theoretical perspective, the treatment of nonadiabatic …

We have investigated the correlated momentum distribution of both electrons from
nonsequential double ionization of helium in a 800 nm, 4.5× 10 14 W/cm 2 laser field. Using …

We investigate experimentally the validity of proposed theories extending the tunneling
approximation towards the multiphoton regime in strong-field ionization of helium. We …

Tunneling is often used to describe multiphoton ionization of rare gas atoms in infrared
fields. We test the tunneling approximation and its nonadiabatic extension by measuring the …

We have measured coincident ion pairs produced in the Coulomb explosion of H 2 by 8–30
fs laser pulses at different laser intensities. We show how the Coulomb explosion of H 2 can …

We report on the nonadiabatic offset of the initial electron momentum distribution in the
plane of polarization upon single ionization of argon by strong field tunneling and show how …

Using H 2+ and D 2+, we observe two-surface population dynamics by measuring the kinetic
energy of the correlated ions that are created when H 2+(D 2+) ionize in short (40–140 fs) …