Résumé
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.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | 1516-1521 |
| Nombre de pages | 6 |
| journal | Nano Letters |
| Volume | 13 |
| Numéro de publication | 4 |
| Les DOIs | |
| état | Publié - 10 avr. 2013 |
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