Regensburg 2019 – scientific programme

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O: Fachverband Oberflächenphysik

O 46: Poster Tuesday: Plasmonics and Nanooptics

O 46.3: Poster

Tuesday, April 2, 2019, 18:00–20:00, Poster D

First steps towards strong coupling between emitters and plasmonic lattices — •Christoph Schnupfhagn, Simon Durst, 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. When arranged in a lattice with a periodicity comparable to the optical wavelength, plasmonic nanoparticles can diffractively couple in the far-field, giving rise to surface lattice resonances. Consequently, the lattice structure generates a spatially extended mode while the plasmonic hotspots boost the light-matter interaction locally. It has already been shown that systems where emitters are coupled to these hybrid modes can serve as plasmonic nanolasers [1]. Furthermore, the small mode volume of the field hotspots allows to reach the strong coupling regime [2]. Here we present our first measurements on the dispersion relations of surface lattice resonances in gold nanoparticle arrays and their interaction with emitters.

[1] A. Yang et al., ACS Nano 2015, 9 (12), 11582-8

[2] L. Shi et al., Phys. Rev. Lett. 2014, 112 (15), 153002