Terahertz spectroscopy of nanostructures with a free electron laser


Terahertz spectroscopy of nanostructures with a free electron laser

Helm, M.

I will start describing the Dresden free-electron laser (FEL) as an intense, tunable, pulsed and narrowband source of infrared and THz radiation and the unique opportunities it offers for the spectroscopy of low-energy excitations in nanostructures. In particular, the FEL can be used for nonlinear optical experiments, for time-resolved pump-probe studies, and also for near-field microscopy. I will mainly discuss experiments studying electronic relaxation processes in semiconductor quantum dots with their totally quantized energy levels, and in graphene with its zero energy gap and linear band dispersion.

Keywords: free electron laser; terahertz; nanostructures; quantum dots; graphene

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Permalink: https://www.hzdr.de/publications/Publ-20115
Publ.-Id: 20115