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

页码：1283 / 1285

页数：3

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