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O: Fachverband Oberflächenphysik

O 83: Poster Session - Plasmonics and Nanooptics: Light-Matter Interaction, Spectroscopy

O 83.6: Poster

Mittwoch, 18. März 2020, 18:15–20:00, P2/EG

Quantifying quantum dot fluorescence in the near-field — •Niklas Stenger, Thorsten Schumacher, Jonas Albert, and Markus Lippitz — University Bayreuth, Chair Experimental Physics III

The spatial resolution in the far field is limited by diffraction. To overcome this limitation, atomic force microscopy can be used. We present a powerful tool to investigate the light-matter interaction on the nanoscale: an AFM combined with a time-correlated single photon counting setup to measure fluorescence as well as the probe topography. The AFM tip used to investigate the tip-induced quenching of quantum dots in the near-field. The influence of factors like tip geometry, tip-probe distance and wavelength on the fluorescence signal will be presented.