Abstract
We investigated the formation dynamics of the artificial exciton molecule state, which consists of two different excitons confined in each quantum dot of a pair of quantum dots, namely a coupled quantum dot (CQD). By the selective optical excitation of the inherent energy states of two different excitons using two color continuous wave (CW) and pulsed lasers, we successively created Xb excitons and an artificial exciton molecule state, and monitored the photoluminescence, namely the population, of the artificial exciton molecule states. By employing the power dependence of the two colors and the excitation energy dependence, we succeeded in controlling the cascade optical excitation of an artificial exciton molecule.
| Original language | English |
|---|---|
| Pages (from-to) | 343-346 |
| Number of pages | 4 |
| Journal | Physica Status Solidi (C) Current Topics in Solid State Physics |
| Volume | 5 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan Duration: 2007 Jul 23 → 2007 Jul 27 |
ASJC Scopus subject areas
- Condensed Matter Physics