INDEPENDENT AND AMBIPOLAR TUNNELING IN ASYMMETRIC-COUPLED QUANTUM-WELL STRUCTURES

被引：6
|
作者：
TANGUY, C
DEVEAUD, B
REGRENY, A
HULIN, D
ANTONETTI, A
机构：
[1] CTR NATL ETUD TELECOMMUN,F-22301 LANNION,FRANCE
[2] CTR NATL ETUD TELECOMMUN,LAB BAGNEUX,F-92220 BAGNEUX,FRANCE
来源：
APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 12期
关键词：
D O I：
10.1063/1.104337
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report femtosecond pump-probe transmission spectroscopy experiments on GaAs/AlGaAs asymmetric-coupled quantum wells, using a spectrally narrow optical excitation at 740 nm. The time-resolved evolution of the bleaching demonstrates the tunneling of both carriers through the barrier. At high densities a single tunneling time is observed in opposition to the low density regime, where the electron and hole contributions are well separated.
引用
收藏
页码：1283 / 1285
页数：3
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