Effect of Electric Field on Excitons in a Quantum Well under Additional Optical Excitation

被引：0

作者：

Chukeev, M. A. ^{[1
]}

Khramtsov, E. S. ^{[1
]}

Zheng, Shiming ^{[1
]}

Ignatiev, I. V. ^{[1
]}

Eliseev, S. A. ^{[2
]}

Efimov, Yu. P. ^{[2
]}

机构：

[1] St Petersburg State Univ, Spin Opt Lab, St Petersburg 198504, Russia

[2] St Petersburg State Univ, Resource Ctr Nanophoton, St Petersburg 198504, Russia

来源：

SEMICONDUCTORS | 2024年 / 58卷 / 05期

基金：

俄罗斯科学基金会;

关键词：

exciton; electric field; quantum well; reflection spectra; ELECTROABSORPTION; ABSORPTION;

D O I：

10.1134/S1063782624050038

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Reflection spectra of a heterostructure with a GaAs/AlGaAs quantum well (QW) of 30 nm wide have been studied under additional optical excitation in an external electric field. The influence of the electric field on all parameters of light-hole and heavy-hole exciton resonances, was studied upon selective excitation of various optical transitions. The effect of compensating for the Stark shift upon excitation to the ground exciton state of the QW is found. A sharp increase in the Stark shift of excitons in QW was found upon optical creation of charge carriers in the GaAs buffer layer. A microscopic calculation of exciton states in various electric fields has been performed. A comparison of the calculated and measured Stark shift of the heavy-hole exciton is used to obtain the dependence of the electric field strength in the QW on the applied voltage.

引用

页码：393 / 400

页数：8

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