Nonexponential photon echo decays from nanostructures: Strongly and weaklylocalized degenerate exciton states

Authors
Erland, J Kim, JC Bonadeo, NH Steel, DG Gammon, D Katzer, DS
Citation
J. Erland et al., Nonexponential photon echo decays from nanostructures: Strongly and weaklylocalized degenerate exciton states, PHYS REV B, 60(12), 1999, pp. R8497-R8500
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
01631829 → ACNP
Volume
60
Issue
12
Year of publication
1999
Pages
R8497 - R8500
Database
ISI
SICI code
0163-1829(19990915)60:12<R8497:NPEDFN>2.0.ZU;2-X
Abstract
In a narrow GaAs quantum well, we resolve biexponential decays of optical c oherences into decay-associated spectra identifying two distinct excitonic behaviors within the same inhomogeneously broadened absorption resonance. T hese excitonic states with overlapping spectra show different optical nonli nearities which allow us to identify them as noninteracting strongly locali zed excitonic states and weakly localized strongly interacting excitonic st ates.