Welcome to the Nonlinear Optics Group

Laser beams in the laboratory.

Nonlinear optical methods are used to push the properties of light to the fundamental limits and beyond. The goal behind this is to enable new measurement techniques, fundamental tests of physics, and to provide novel light sources required for scientific questions. In the center of the research is the physics of light and applied physics with light. Nonlinear optical methods are applied in two domains: High power solid state lasers and correlations and entanglement of single photons.

In the domain of high power solid state lasers nonlinear-methods are used to improve the spatial and spectral properties of the laser radiation. E.g. nonlinear mirrors are used to compensate phase distortions via phase conjugate reflection, nonlinear gratings, gain grating, are used to couple laser oscillators and enable frequency stable operation of pulsed lasers

In the domain of single photons we use parametric effects to realize spatial entanglement between photons. Novel concepts in quantum imaging are pursued to realize spatial resolution beyond the classical diffraction limited (Rayleigh bound).