Abstract
The interaction between light and quantum-dot (QD) excitons is strongly influenced by the environment in which the QD is placed. We have investigated the interaction by measuring the time-resolved spontaneous-emission rate of QD excitons in different nanostructured environments. Thereby, we have determined the oscillator strength, quantum efficiency and spin-flip rates of QD excitons as well as their dependencies on
emission wavelength and QD size. Enhancement and inhibition
of QD spontaneous emission in photonic crystal membranes
(PCMs) is observed. Efficient coupling to PCM waveguides is
demonstrated and the influence of disorder is discussed. The findings have a strong bearing on future nanophotonic devices.
| Original language | English |
|---|---|
| Title of host publication | proceedings of the EXCON |
| Publisher | Wiley |
| Publication date | 2010 |
| Publication status | Published - 2010 |
| Event | International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials - Brisbane, Queensland, Australia Duration: 1 Jan 2010 → … Conference number: 9 |
Conference
| Conference | International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials |
|---|---|
| Number | 9 |
| City | Brisbane, Queensland, Australia |
| Period | 01/01/2010 → … |
Keywords
- spin-flip
- quantum-dot excitons
- photonic crystals
- oscillator strength