Abstract
Photoluminescence experiments were performed on high-quality InGaAs/GaAs periodic multiple quantum well structures with up to N = 100 quantum wells, where the exciton emission is strongly influenced by the coherent interwell coupling, showing up in multiple linesplitting and a crossing of the normal modes around Bragg resonance. For N≥30 and a certain distance between adjacent wells, a quadratic increase of the amplitude and an increasing directionality of the vertical emission are observed. The weakest emission occurs in Bragg resonance, where under resonant excitation, a strong superradiant reemission takes place.
Original language | English (US) |
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Number of pages | 1 |
State | Published - Jan 1 1999 |
Event | Proceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99) - Baltimore, MD, USA Duration: May 23 1999 → May 28 1999 |
Other
Other | Proceedings of the 1999 Quantum Electronics and Laser Science Conference (QELS '99) |
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City | Baltimore, MD, USA |
Period | 5/23/99 → 5/28/99 |
ASJC Scopus subject areas
- Physics and Astronomy(all)