Regensburg 2019 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 72: Poster Wednesday: Scanning Probe Techniques
O 72.4: Poster
Mittwoch, 3. April 2019, 17:45–20:00, Poster B2
Design of a New Photon Collecting STM — •Mike Stummvoll1, Markus Etzkorn1, and Uta Schlickum1,2 — 1Technische Universität Braunschweig, Institut für Angewandte Physik, Mendelssohnstr. 2, 38106 Braunschweig — 2Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, 70569 Stuttgart
To access dynamical properties of single photon sources on surfaces, atomic scale control is mandatory. For the improved characterisation of charge carrier and exciton dynamics, we design a new scanning-tunnelling microscope (STM).
The tunnel current in an STM tunnel junction can be used to excite photons locally on atomic scale objects. To collect the emitted photons we will employ a parabolic mirror, which will be aligned in-situ using piezo-driven actuators. An external optical set-up will be used for optical analysis. A spectrometer will yield information on the photon wavelength while avalanche photo-diodes (APDs) will be used for single-photon detection and high time resolution.