Controlling Spontaneous Emission with Plasmonic Optical Patch Antennas
Nano Letters2013Vol. 13(4), pp. 1516–1521
Citations Over TimeTop 1% of 2013 papers
Chérif Belacel, B. Habert, Florian Bigourdan, François Marquier, J.-P. Hugonin, Steffen Michaelis de Vasconcellos, Xavier Lafosse, Laurent Coolen, Catherine Schwob, C. Javaux, Benoît Dubertret, Jean‐Jacques Greffet, P. Senellart, Agnès Maître
Abstract
We experimentally demonstrate the control of the spontaneous emission rate and the radiation pattern of colloidal quantum dots deterministically positioned in a plasmonic patch antenna. The antenna consists of a thin gold microdisk separated from a planar gold layer by a few tens of nanometers thick dielectric layer. The emitters are shown to radiate through the entire patch antenna in a highly directional and vertical radiation pattern. Strong acceleration of spontaneous emission is observed, depending on the antenna geometry. Considering the double dipole structure of the emitters, this corresponds to a Purcell factor up to 80 for dipoles perpendicular to the disk.
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