Dresden 2017 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 59: Plasmonics and Nanooptics

O 59.18: Poster

Dienstag, 21. März 2017, 18:30–20:30, P2-OG1

Coupling of Quantum Emitters to Plasmonic Metamaterials — •Daniel Kuckla, Manuel Peter, and Stefan Linden — Physikalisches Institut, University of Bonn, Nußallee 12, D-53115 Bonn, Germany

Metamaterials consisting of sub-wavelength structures such as split-ring resonators (SRRs) can give rise to unusual optical properties and allow the shaping of electromagnetic waves. In most experiments so far, the investigated metamaterials have been passive structures. However, active metamaterials are attracting more and more interest. For instance, the coupling of semiconductor quantum dots to the different modes of a SRR array has been investigated recently. Here, we focus on the effect of the electromagnetic interactions between the elements of an active metamaterial on its emission properties. For this purpose, we fabricate a series of rectangular SRR arrays with intentionally deposited quantum dots by electron beam lithography in combination with a process that allows us to chemically link nanoparticles from an aqueous solution to freely definable sites on the substrate. To study the influence of the interactions within the metamaterial, we vary within the series the lattice periods while keeping the unit cell size constant. Our SRRs are designed in such a way that the second and third plasmonic mode of the metamaterial with equal lattice periods overlap with the emission spectrum of the uncoupled quantum dots.

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