Magyar

Attosecond physics group

Department of Optics and Quantum Electronics at the University of Szeged

The main interest of our research group is the study and optimization of attosecond pulse generation. We study the process with theoretical models. The interaction of the laser fields with a single atom is carried out with a semi-classical (semi quantum-mechanical) model, consisting of three distinct steps.

The moment of ionization defines the possible return times and energies, hence also the time-frequency properties of the generated radiation.

The nonlinear response of a macroscopic medium is calculated with a 3D propagation model, which takes into account the distortions of the laser field during propagation. The single-atom response is then calculated in different parts of the cell using the propagated field, and the generated harmonic radiation coherently summed to obtain the response of the macroscopic medium.