Optical properties of an exciton trapped by an ionized donor in ellipsoidal quantum dots under electric field and hydrostatic pressure

被引：3

作者：

Shi, Lei ^{[1
]}

Yan, Zu-Wei ^{[1
]}

机构：

[1] Inner Mongolia Agr Univ, Coll Sci, Hohhot 010018, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2019年 / 33卷 / 12期

关键词：

Optical property; exciton; ellipsoidal quantum dot; electric field; hydrostatic pressure; REFRACTIVE-INDEX CHANGES; BINDING-ENERGY; ABSORPTION COEFFICIENTS; IMPURITY; STATES;

D O I：

10.1142/S021797921950108X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical properties of an exciton trapped by an ionized donor in an ellipsoidal quantum dot (QD) with both oblate and prolate shapes under applied electric field and hydrostatic pressure have been studied. We have calculated the linear and third-order nonlinear absorption coefficients (ACs) and refractive index changes (RICs) by using a variational method within the perturbation theory. The results show that the QD shape and size have a significant influence on the positions and magnitudes of the peaks of the (ACs) and RICs, moreover, the influence of hydrostatic pressure and electric field under different QD shape is also different.

引用

页数：13

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