Intense laser-matter interactions are at the center of interest in research and technology
since the development of high-power lasers. They have been widely used for fundamental …

Modern light generation technology offers extraordinary capabilities for sculpting light
pulses, with full control over individual electric field oscillations within each laser cycle …

Quantum particles can penetrate potential barriers by tunnelling. If that barrier is rotating, the
tunnelling process is modified,. This is typical for electrons in atoms, molecules or solids …

As a fundamental property of the electron, the spin plays a decisive role in the electronic
structure of matter, from solids to molecules and atoms, for example, by causing magnetism …

Strong laser pulses enable probing molecules with their own electrons. The oscillating
electric field tears electrons off a molecule, accelerates them, and drives them back toward …

We report on nonsequential double ionization of Ar by a laser pulse consisting of two
counterrotating circularly polarized fields (390 and 780 nm). The double-ionization …

Radiative polarization of electrons and positrons through the Sokolov-Ternov effect is
important for applications in high-energy physics. Radiative spin polarization is a …

In situ generation of a high-energy, high-current, spin-polarized electron beam is an
outstanding scientific challenge to the development of plasma-based accelerators for high …

We show that the electrons, produced in strong-bicircular-field-induced above-threshold
ionization of inert-gas atoms, have a large spin asymmetry if the ions exhibit fine-structure …

The exact nondipole Volkov solutions to the Schrödinger equation and Pauli equation are
found, based on which a strong field theory beyond the dipole approximation is built for …