Two-dimensional (2D) optical spectroscopy utilizing multiple ultrafast coherent laser pulses
in the infrared or UV-vis frequency range has been used to study protein structure and …

The observation of coherent dynamics ensuing from the excitation of molecular systems by
femtosecond laser pulses is at the heart of femtochemistry. The time-dependent evolution of …

The field of ultrafast spectroscopy of semiconductors and their nanostruc tures continues to
be an active field of research. Exciting new developments have taken place since the first …

Coupling vibrational transitions to resonant optical modes creates vibrational polaritons
shifted from the uncoupled molecular resonances and provides a convenient way to modify …

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 …

We study many-body interactions between excitons in semiconductors by applying the
powerful technique of optical two-dimensional Fourier transform spectroscopy. A two …

The application of femtosecond spectroscopy to the study of ultrafast dynamics in
semiconductor materials and nanostructures is reviewed with particular emphasis on the …

The study of semiconductor heterostructures started more than forty years ago. In the 1980s
this area of research moved to the forefront of semiconduc tor physics, largely due to …

The optical properties of semiconducting transition metal dichalcogenides are dominated by
both neutral excitons (electron–hole pairs) and charged excitons (trions) that are stable even …

The degenerate-four-wave-mixing response of excitons in GaAs quantum wells is modeled
using the optical Bloch equations including exciton-exciton interactions. The results display …