Tuning the optical performance of surface quantum dots in InGaAs/GaAs hybrid structures.
Opt Express
; 15(13): 8157-62, 2007 Jun 25.
Article
em En
| MEDLINE
| ID: mdl-19547142
ABSTRACT
GaAs spacer thicknesses are varied to tune the coupling between InGaAs surface quantum dots (QDs) and multilayers of buried QDs. Temperature and excitation intensity dependence of the photoluminescence together with time resolved photoluminescence reveal that coupling between layers of QDs and consequently the optical properties of both the surface and the buried QDs significantly depend on the GaAs spacer. This work provides an experimental method to tune and control the optical performance of surface QDs.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2007
Tipo de documento:
Article