Abstract
We report on electrically pumped high-Q quantum dot-micropillar cavities with quality factors of up to 16.000. A special current injection scheme using a ring-shaped upper contact is presented which ensures an efficient light out-coupling through the uncapped upper surface of the micropillar. The devices feature excellent single-quantum dot cavity quantum electrodynamic effects with a Purcell enhancement of about 10 for a micropillar with a diameter of 2.5 mu m. (C) 2008 American Institute of Physics.
Original language | English |
---|---|
Article number | 091107 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 92 |
Issue number | 9 |
DOIs | |
Publication status | Published - 3 Mar 2008 |
Keywords
- SINGLE-PHOTON SOURCE
- SPONTANEOUS EMISSION
- MICROCAVITY
- BOXES