Electro-optical properties of excitons in low-dimensional semiconductor structures

被引：0
|
作者：
Bassani, F
Czajkowski, G
Dressler, M
Silvestri, L
机构：
[1] Scuola Normale Super Pisa, I-56126 Pisa, Italy
[2] Ist Nazl Fis Mat, Rome, Italy
[3] Univ Technol & Agr, PL-85796 Bydgoszcz, Poland
[4] Swiss Fed Inst Technol, Inst Polymers, CH-8092 Zurich, Switzerland
来源：
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2000年 / 178卷 / 01期
关键词：
D O I：
10.1002/1521-396X(200003)178:1<51::AID-PSSA51>3.0.CO;2-Q
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show how to compute the linear electro-optical spectra of low-dimensional systems (LDS) in the excitonic energy region using the dynamical density matrix approach. The method is applied to GaAs/Ga1-xAlxAs superlattices (SL), quantum wells (QW), quantum wires (QWW) and quantum dots (QD), and the electro-optical functions are computed. In the case of SLs and QWs we compute the electro-optical functions when a uniform electric field is applied in the growth direction. In the case of QWWs we compute the optical functions of a matrix containing QWWs exposed to a uniform electric field in the QWW direction. In the cases of QDs we consider parabolic confinement and obtain a quadratic Stark shift of the excitonic absorption peaks.
引用
收藏
页码：51 / 55
页数：5
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