| Zugriffsnummer | 28191 |
| Dokumenttyp | Konferenzartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Generation of coherent charge oscillations in the plane of GaAs quantum wells |
| Autor(in); Institution |
Priyadarshi, Shekar; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Pierz, Klaus; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Bieler, Mark; 2.5, Halbleiterphysik und Magnetismus, PTB-Braunschweig
Siegner, Uwe; 2, Elektrizität, PTB-Braunschweig
Dawson, Philip; University of Manchester, School of Physics and Astronomy, Manchester, UK
|
| Quelle/Jahr | Ultrafast phenomena and nanophotonics XVI:(2012), 82600T-1 - 82600T-11 |
| Schriftenreihe | Proceedings of SPIE: 8260 |
| Herausgeber(in) |
Betz, Markus
|
| ISBN | 978-0-8194-8903-6 |
| DOI | |
| Verlag | Bellingham, Wash.: SPIE |
| Konferenzangaben | SPIE Photonics West: Ultrafast Phenomena and Nanophotonics XVI, San Francisco, Calif., 22-25, January, 2012, USA |
| Zusammenfassung | We report on the observation of ultrafast in-plane charge oscillations resulting from simultaneous optical excitation of heavy- and light-hole excitons in (110)-oriented GaAs quantum wells. These charge oscillations arise from a displacement between heavy and light-hole states in the plane of the quantum well, and, thus, differ significantly from previously observed charge oscillations directed along the growth direction of a quantum well. Our observations are evidence for the existence of a strong far-infrared inter-subband transition dipole moment between heavy- and light-hole subbands for in-plane wave vectors which we estimate to be ~0.5 eÅ for the quantum wells under investigation. We attribute this in-plane transition dipole moment to strong band mixing in the (110)-oriented structures. |
Zitierung
Priyadarshi, S., Pierz, K., Bieler, M., Siegner, U., & Dawson, P. (2012). Generation of coherent charge oscillations in the plane of GaAs quantum wells. SPIE Photonics West: Ultrafast Phenomena and Nanophotonics XVI, San Francisco, Calif., 22-25, January, 2012, USA. https://doi.org/10.1117/12.905348