MBI Colloquium

Terahertz Spectroscopy: from basic research to real world applications

Martin Koch | Department of Physics, Philipps Universität Marburg

In the last few years spectroscopy at terahertz (THz) frequencies, i.e. in the range between 0.1 and a few THz has enjoyed increasing interest for two reasons. Firstly, a lot of fundamental excitations in matter have transition energies in the meV range. Hence, they can be excited by THz photons. Examples include molecular vibrations, phonons in crystalline solids and intra-excitonic transitions; to name only a few. Secondly, a multitude of applications have been discussed for THz systems, ranging from medical diagnostics and security applications to the monitoring of industrial production processes.

In this talk we first will give examples for basic research applications of THz spectroscopy systems. In particular, we investigate the building and decay dynamics of charge transfer excitons using optical pump-THz probe spectroscopy. Furthermore, we will discuss several real-world applications of THz spectroscopy systems and the recent progress in the developmentof these systems.

If you are interested, but not an institute member: Please contact Ute.Schlichting@mbi-berlin.de to get the login dates for this event.