Interest in the multiple facets of optical vortices has flourished in the last three decades. This
review examines the basic research and applications of the interplay between optical …

The authors review the physics of ultrafast dynamics in semiconductors and their
heterostructures, including both the observed experimental phenomena and the theoretical …

Acceleration and collision of particles has been a key strategy for exploring the texture of
matter. Strong light waves can control and recollide electronic wavepackets, generating high …

The photoluminescence (PL) spectrum of transition-metal dichalcogenides (TMDs) shows a
multitude of emission peaks below the bright exciton line, and not all of them have been …

Atomically thin transition metal dichalcogenides can be stacked to van der Waals
heterostructures enabling the design of new materials with tailored properties. The strong …

We discuss the photoluminescence (PL) of semiconducting transition metal dichalcogenides
on the basis of experiments and a microscopic theory. The latter connects ab initio …

The optically excited system of electronic excitations in semiconductor nanostructures is
analyzed theoretically. A many-body theory based on an equation-of-motion approach for …

Whenever a physicist visits the physics faculty in Dortmund, he/she is bound to hear the
success story of the so-called integrated course, a four-semester introduction to physics …

Controlling charge density in two-dimensional (2D) materials is a powerful approach for
engineering new electronic phases and properties. This control is traditionally realized by …

Lasers are recognized for coherent light emission, the onset of which is reflected in a
change in the photon statistics. For many years, attempts have been made to directly …