Controlling spontaneous emission with plasmonic optical patch antennas.
Nano Lett
; 13(4): 1516-21, 2013 Apr 10.
Article
in En
| MEDLINE
| ID: mdl-23461679
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.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Colloids
/
Quantum Dots
/
Gold
Language:
En
Journal:
Nano Lett
Year:
2013
Document type:
Article
Affiliation country:
France