Infrared solid state spectroscopy using a free-electron laser

I will introduce the free electron laser at the Forschungszentrum Dresden-Rossendorf, which covers a wavelength range between 3 and 200 micrometers with picosecond pulses. Then I will discuss a few experiments which focus on temporal and spatial resolution, respectively. The former refers to pump-probe experiments on semiconductor quantum structures and the latter to near-field spectro-microscopy on ferroelectrics.