ROOM-TEMPERATURE ENHANCEMENT OF ELECTROOPTICAL MODULATION BY RESONANCE-INDUCED EXCITON MIXING IN A GAAS/ALAS SUPERLATTICE

被引：8

作者：

SCHNEIDER, H ^{[1
]}

PLOOG, K ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 18期

关键词：

D O I：

10.1063/1.105043

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on room-temperature absorption properties of a GaAs/AlAs short-period superlattice in which, at certain electric fields perpendicular to the layers, different conduction subbands centered in adjacent and nonadjacent wells show a level repulsion and an anticrossing behavior. The associated mixing between the corresponding electron wave functions reduces the oscillator strengths and influences the transition energies of certain excitions. These electric field effects can be used to improve the performance of electro-optical modulator devices. Our results also provide a method to investigate the high-field coherence properties of charge carriers in superlattices.

引用

页码：1994 / 1996

页数：3

共 19 条

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