Terahertz spectroscopy of semiconductor nanostructures

Abstract: The availability of ultrashort laser pulses enabled the development of techniques for coherent generation and detection of broadband terahertz pulses. These can be efficiently applied for spectroscopic measurements including terahertz transmission and emission spectroscopy and pump-probe experiments. The high probing frequency enables investigation of charge transport on nanoscale distances. This makes terahertz spectroscopy suitable for studies of nanostructured materials.
In this talk, an overview of basic experimental techniques utilizing time-domain terahertz spectroscopy will be provided. The status of the art in the analysis of measured terahertz conductivity spectra of semiconductor nanostructures—which requires accounting for the effects of charge confinement as well as for the influence of depolarization fields—will be also presented.