Exciton dynamics studied via internal THz transitions
| Autor: | R. Lövenich, Daniel Hägele, M.A. Carnahan, Robert A. Kaindl, Daniel S. Chemla |
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| Rok vydání: | 2003 |
| Předmět: |
Condensed Matter::Quantum Gases
Condensed matter physics Condensed Matter::Other Chemistry Terahertz radiation Physics Exciton Degrees of freedom (physics and chemistry) Physics::Optics Electron hole Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Molecular physics Optical conductivity Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Ionization Many-body Processes Semiconductors Ultrafast Spectroscopy Quantum well Biexciton |
| Zdroj: | Kaindl, R.A.; Hagele, D.; Carnahan, M.A.; Lovenich, R.; & Chemla, D.S.(2003). Exciton dynamics studied via internal THz transitions. Lawrence Berkeley National Laboratory. Lawrence Berkeley National Laboratory: Lawrence Berkeley National Laboratory. Retrieved from: http://www.escholarship.org/uc/item/6nm6761r |
| ISSN: | 1521-3951 0370-1972 |
| Popis: | We employ a novel, ultrafast terahertz probe to investigate the dynamical interplay of optically-induced excitons and unbound electron-hole pairs in GaAs quantum wells. Resonant creation of heavy-hole excitons induces a new low-energy oscillator linked to transitions between the internal exciton degrees of freedom. The time resolved terahertz optical conductivity is found to be a probe well suited for studies of fundamental processes such as formation, relaxation and ionization of excitons. |
| Databáze: | OpenAIRE |
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