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arXiv · 1209.6566

Controlling spontaneous emission with plasmonic optical patch antennas

C. Belacel·B. Habert·F. Bigourdan·F. Marquier·J. -P. Hugonin·S. Michaelis de Vasconcellos·X. Lafosse·L. Coolen·C. Schwob·C. Javaux·B. Dubertret·J. -J. Greffet·P. Senellart·A. Maitre
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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 30 nm above a thick gold 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 of the antenna size. 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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C. Belacel, B. Habert, F. Bigourdan, F. Marquier, J. -P. Hugonin, S. Michaelis de Vasconcellos, X. Lafosse, L. Coolen, C. Schwob, C. Javaux, B. Dubertret, J. -J. Greffet, P. Senellart, A. Maitre. 2012-09-28. Controlling spontaneous emission with plasmonic optical patch antennas. https://doi.org/10.1021/nl3046602

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