Cavity-enhanced blue single-photon emission from a single InGaN /GaN quantum dot
Abstract
The authors report on the generation of single photons in the blue spectral region from a single InGaN /GaN quantum dot. The collection efficiency was enhanced by embedding the quantum dot layer in the middle of a low-Q microcavity. The microphotoluminescence is observed to be approximately ten times stronger than typical InGaN quantum dot emission without a cavity. The measurements were performed using nonlinear excitation spectroscopy in order to suppress the background emission from the underlying wetting layer.
- Publication:
-
Applied Physics Letters
- Pub Date:
- July 2007
- DOI:
- 10.1063/1.2767217
- Bibcode:
- 2007ApPhL..91e2101J
- Keywords:
-
- 78.67.Hc;
- 78.66.Fd;
- 78.55.Cr;
- 68.65.Hb;
- 68.65.La;
- 68.08.Bc;
- Quantum dots;
- III-V semiconductors;
- III-V semiconductors;
- Quantum dots;
- Quantum wires;
- Wetting