Our main focus is the study of the interaction between light and the medium which are induced by the propagating light itself. Our research covers various areas of nonlinear optics from light-matter interactions at the few-photon level to nonlinear dynamics at the terawatt level. Research area includes ultrafast nonlinear optics, nanophotonics, nonlinear propagation in fibers and bulk media, photonics crystal fibers, coherent interactions of laser light with matter, the generation of non-classical light fields, and stimulated scattering processes.