外部磁场对非对称双凸透镜形量子点带间和带内光学性质的影响。

Effects of an External Magnetic Field on the Interband and Intraband Optical Properties of an Asymmetric Biconvex Lens-Shaped Quantum Dot.

作者信息

Mkrtchyan Mher A, Hayrapetyan David B, Kazaryan Eduard M, Sarkisyan Hayk A, Vinnichenko Maxim Ya, Shalygin Vadim A, Firsov Dmitry A, Petrosyan Lyudvig S

机构信息

General Physics and Quantum Nanostructures, Russian-Armenian University, 123 Hovsep Emin Str., Yerevan 0051, Armenia.

Institute of Electronics and Telecommunications, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia.

出版信息

Nanomaterials (Basel). 2021 Dec 27;12(1):60. doi: 10.3390/nano12010060.

DOI:10.3390/nano12010060

PMID:35010010

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8746701/

Abstract

The theoretical investigation of interband and intraband transitions in an asymmetric biconvex lens-shaped quantum dot are considered in the presence of an external magnetic field. The selection rules for intraband transitions are obtained. The behaviors of linear and nonlinear absorption and photoluminescence spectra are observed for different temperatures and magnetic field strengths. The second and third harmonic generation coefficients as a function of the photon energy are examined both in the absence and presence of an external magnetic field.

摘要

在存在外部磁场的情况下，对非对称双凸透镜形量子点中的带间和带内跃迁进行了理论研究。得到了带内跃迁的选择定则。观察了不同温度和磁场强度下线性和非线性吸收以及光致发光光谱的行为。在不存在和存在外部磁场的情况下，都研究了作为光子能量函数的二次和三次谐波产生系数。