Berlin 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 50: Coupled Nanostructures and Light Localization
O 50.1: Vortrag
Mittwoch, 18. März 2015, 10:30–10:45, MA 043
Babinet to the half: Coupling of solid and inverse plamonic structures — •Mario Hentschel1,2, Thomas Weiss1, Shahin Bagheri1, and Harald Giessen1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart, Germany — 2Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, USA
We study the coupling between the plasmonic resonances of solid and inverse metallic nanostructures [1]. While the coupling between solid-solid and inverse-inverse plasmonic structures is well-understood, mixed solid-inverse systems have not yet been studied in detail. We find that an efficient coupling between inverse and solid resonances is possible, identify the necessary geometrical prerequisites, and demonstrate a novel solid-inverse plasmonic electromagnetically induced transparency (EIT) structure as well as mixed chiral systems. We furthermore show that for the coupling of asymmetric rod-shaped inverse and solid structures symmetry breaking is crucial. In contrast, highly symmetric structures such as nanodisks and nanoholes are straightforward to couple. Moreover, we demonstrate our concept experimentally in lithographically fabricated multilayered systems and explore a novel fabrication route combining top-down ion-etching techniques with high quality wet-chemically synthesized nanoparticles. Our results constitute a significant extension of the plasmonic coupling toolkit, and we thus envision the emergence of a large number of intriguing novel plasmonic coupling phenomena in mixed solid-inverse structures. [1] M. Hentschel et al., Nano Lett. 13, 4428 (2013)