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Collective effects of excitons in multiple-quantum-well Bragg and anti-Bragg structures

被引：158
作者：
Hubner, M
Kuhl, J
Stroucken, T
Knorr, A
Koch, SW
Hey, R
Ploog, K
机构：
[1] UNIV MARBURG,DEPT PHYS,D-35032 MARBURG,GERMANY
[2] UNIV MARBURG,CTR MAT SCI,D-35032 MARBURG,GERMANY
[3] PAUL DRUDE INST FESTKORPERELEKT,D-10177 BERLIN,GERMANY
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.76.4199
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Femtosecond degenerate four-wave mixing is used to investigate collective excitonic effects in radiatively coupled semiconductor multiple-quantum-well Bragg and anti-Bragg structures. The experimental and theoretical analysis of Bragg structures shows that the light-induced coupling causes a faster signal decay for increasing quantum-well numbers. For anti-Bragg structures, the predicted splitting of the excitonic resonances is observed in the four-wave-mixing spectrum causing quantum beats in the time-integrated signal.
引用
收藏
页码：4199 / 4202
页数：4
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