Dresden 2020 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 83: Poster Session - Plasmonics and Nanooptics: Light-Matter Interaction, Spectroscopy
O 83.3: Poster
Mittwoch, 18. März 2020, 18:15–20:00, P2/EG
Nanoparticle-on-mirror systems for strong coupling with emitters — •Christoph Schnupfhagn, Thorsten Schumacher, and Markus Lippitz — Experimental Physics III, University of Bayreuth, Germany
Plasmonic nanostructures allow to increase the interaction with light by resonant oscillations of the conduction electrons. Over the last years, the nanoparticle-on-mirror geometry has received increasing interest, where plasmonic nanoparticles are placed above a metallic substrate. If the gap size between particle and substrate is on the order of only a few nanometers, the systems couple and form a cavity mode. In the literature, mode volumes as small as 40 nm3 have been realized. When incorporating emitters into the gap, this allows for strong coupling between emitter and the plasmonic mode. Here, we will present results on the spectroscopy of colloidal gold nanoparticles on top of crystalline gold flakes. Furthermore, we will give an outlook how emitters could be positioned in the cavity.