The transfer of charge at the molecular level plays a fundamental role in many areas of
chemistry, physics, biology and materials science. Today, more than 60 years after the …

The availability of attosecond-duration extreme ultraviolet or soft X-ray light sources has
opened up new fields of research in atomic and molecular physics. These pulses can be as …

Photoionization using attosecond pulses can lead to the formation of coherent
superpositions of the electronic states of the parent ion. However, ultrafast electron ejection …

Optical modulation of high-harmonics generation in solids enables the detection of material
properties, such as the band structure, and promising new applications, such as super …

Understanding the evolution of molecular electronic structures is the key to explore and
control photochemical reactions and photobiological processes. Subjected to strong laser …

Nonlinear optical microscopy provides elegant means for label-free imaging of biological
samples and condensed matter systems. The widespread areas of application could even …

Molecular chirality plays an essential role in most biochemical processes. The observation
and quantification of chirality-sensitive signals, however, remains extremely challenging …

Attosecond charge migration is a periodic evolution of the charge density at specific sites of
a molecule on a timescale defined by the energy intervals between the electronic states …

Strong-field photoelectron holography and laser-induced electron diffraction (LIED) are two
powerful emerging methods for probing the ultrafast dynamics of molecules. However, both …

Linearly polarized vector beams are structured lasers whose topology is characterized by a
well-defined Poincaré index, which is a topological invariant during high-order harmonic …