Lattice Dynamics
Lattice Dynamics
Research Group Alexander Paarmann
Research Group Alexander Paarmann

Riko Kießling
Riko Kießling
Doctoral Student, grad. Aug. 2020
Department of Physical Chemistry
Fritz Haber Institute
Faradayweg 4-6
14195 Berlin
Germany

My research focuses on nonlinear light-matter interaction using vibrational sum-frequency generation (SFG) spectroscopy. To this end, resonant excitation of low-energy quanta like phonons in dielectric materials is investigated by coherent mid-infrared free-electron laser radiation.
Further, the dephasing dynamics of the induced electric polarization is studied on a fs time scale by means of time-domain SFG spectroscopy.