Spectral hole burning in self-organized quantum dots
| Autor: | C. M. A. Kapteyn, T. Warming, R. Heitz, V. M. Ustinov, Pavel N. Brunkov, Dieter Bimberg, F. Guffarth |
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| Rok vydání: | 2004 |
| Předmět: |
Physics
Condensed Matter::Other Binding energy Physics::Optics Optical storage Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Quantum dot Spectral hole burning Atomic physics Trion Saturation (chemistry) Excitation Diode |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 21:215-218 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2003.11.002 |
| Popis: | Accumulated spectral hole burning is demonstrated for self-organized InAs/GaAs quantum dots (QDs) embedded in the space-charge region of a p–i–n diode. In two-color experiments, selective charging of QDs by resonant optical excitation is proved. A hole storage time of 1.5 ms leads to saturation densities of only 0.5 mW/cm −2 . The results show the potential of inhomogeneously broadened ensembles of self-organized QDs for parallel optical storage. Additionally, spectral hole burning is used to identify the positive trion and to estimate the trion binding energy. |
| Databáze: | OpenAIRE |
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