TUNNELING ASSISTED MODULATION OF THE INTERSUBBAND ABSORPTION IN DOUBLE QUANTUM-WELLS

被引：50
|
作者：
VODJDANI, N
VINTER, B
BERGER, V
BOCKENHOFF, E
COSTARD, E
机构：
[1] Laboratoire Central de Recherches, Thomson-CSF, 91404 Orsay, Domaine de Corbeville
来源：
APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 05期
关键词：
MU-M;
D O I：
10.1063/1.105384
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We present a new efficient modulator structure in which electron tunneling between asymmetric coupled quantum wells is used to populate or deplete the ground level for the infrared (IR) absorption, leading to externally controlled IR absorption at two different wavelengths (here 10.2 and 11.4-mu-m). The temperature dependence of the modulation depth is measured. We have used photoluminescence and photoluminescence excitation spectroscopies to analyze the space charge effects in the double quantum wells, and to estimate the carrier concentration in each well as a function of bias. The behavior of the device has been simulated using a self-consistent model.
引用
收藏
页码：555 / 557
页数：3
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