Abstract
Excitonic transitions of single InAs self-assembled quantum dots were directly measured at 4.2 K in an optical transmission experiment. We use the Stark effect in order to tune the exciton energy of a single quantum dot into resonance with a narrow-band laser. With this method, sharp resonances in the transmission spectra are observed. The oscillator strengths as well as the homogeneous line widths of the single-dot optical transitions are obtained. A clear saturation in the absorption is observed at modest laser powers. © 2003 Published by Elsevier B.V.
Original language | English |
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Pages (from-to) | 395-399 |
Number of pages | 5 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 21 |
Issue number | 2-4 |
DOIs | |
Publication status | Published - Mar 2004 |
Event | Proceedings of the Eleventh International Conference on Modulation (MSS11) - Nara, Japan Duration: 14 Jul 2003 → 18 Jul 2003 |
Keywords
- Absorption spectroscopy
- Quantum dots
- Relaxation dynamics