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Controlling Spontaneous Emission with Plasmonic Optical Patch Antennas

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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https://hal-iogs.archives-ouvertes.fr/hal-00821543
Contributor : Jean-Jacques Greffet <>
Submitted on : Friday, May 10, 2013 - 4:47:36 PM
Last modification on : Saturday, September 26, 2020 - 11:44:07 PM

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Cherif Belacel, Benjamin Habert, Florian Bigourdan, François Marquier, Jean-Paul Hugonin, et al.. Controlling Spontaneous Emission with Plasmonic Optical Patch Antennas. Nano Letters, American Chemical Society, 2013, 13 (4), pp.1516-1521. ⟨10.1021/nl3046602⟩. ⟨hal-00821543⟩

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