Coulomb memory signatures in the excitonic optical Stark effect

Authors
Sieh, C Meier, T Jahnke, F Knorr, A Koch, SW Brick, P Hubner, M Ell, C Prineas, J Khitrova, G Gibbs, HM
Citation
C. Sieh et al., Coulomb memory signatures in the excitonic optical Stark effect, PHYS REV L, 82(15), 1999, pp. 3112-3115
Citations number
29
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
15
Year of publication
1999
Pages
3112 - 3115
Database
ISI
SICI code
0031-9007(19990412)82:15<3112:CMSITE>2.0.ZU;2-M
Abstract
Differential absorption spectra of high-quality InGaAs quantum wells are pr esented for various pump detunings and polarization configurations. For low intensity pump pulses tuned well below the exciton a redshift is observed for opposite circularly polarized probe pulses. Microscopic calculations sh ow that this redshift originates from memory effects in the Coulomb-induced excitonic correlations.