Abstract
Time resolved reflectivity measurements of multiple-quantum-well Bragg structures show a strong reduction of the reflectivity at increased excitation levels. At low intensities, a pump-induced contrast of more than 20% in the reflectivity of a 10 quantum well Bragg structure is observed and attributed to the superradiant coupling between the quantum-well excitons. This superradiant state is gradually suppressed for increasing excitation densities due to rapid loss of phase coherence via excitation induced dephasing.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 105-108 |
| Number of pages | 4 |
| Journal | Solid State Communications |
| Volume | 105 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1998 |
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Fingerprint Dive into the research topics of 'Suppression of the bragg reflection in semiconductor multiple quantum wells by excitation induced dephasing'. Together they form a unique fingerprint.
Cite this
Hübner, M., Kuhl, J., Haas, S., Stroucken, T., Koch, S. W., Hey, R., & Ploog, K. (1998). Suppression of the bragg reflection in semiconductor multiple quantum wells by excitation induced dephasing. Solid State Communications, 105(2), 105-108. https://doi.org/10.1016/S0038-1098(97)10038-2