najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2023-14-1-44-53najo-187Research ArticlePHYSICSФИЗИКАA study of confined Stark effect, hydrostatic pressure and temperature on nonlinear optical properties in 1D GaxAl1−xAs/GaAs/GaxAl1−xAs quantum dots under a finite square well potentialИсследование ограниченного Штарк-эффекта, гидростатического давления и температуры на нелинейно-оптические свойства в одномерных квантовых точках GaxAl1-xAs/GaAs/GaxAl1-xAs с конечным потенциалом прямоугольной ямыЧаурасияР.ChaurasiyaR.

Рохит Чаурасия, 

Дели.

Rohit Chaurasiya, Department of Applied Physics,

Shahbad Daulatpur, Main Bawana Road, Delhi, 110042.

rohitqc2000@gmail.comhttps://orcid.org/0000-0003-4815-5354ДахияС.DahiyaS.

Суман Дахия,

Дели.

Suman Dahiya, Department of Applied Physics,

Shahbad Daulatpur, Main Bawana Road, Delhi, 110042.

dahiyasuman90@gmail.comhttps://orcid.org/0000-0001-6812-4358ШармаР.SharmaR.

Ринку Шарма,

Дели.

Rinku Sharma, Department of Applied Physics,

Shahbad Daulatpur, Main Bawana Road, Delhi, 110042.

rinkusharma@dtu.ac.inDelhi Technological UniversityIndia2023050620251414453Copyright © Chaurasiya R., Dahiya S., Sharma R., 20252025Чаурасия Р., Дахия С., Шарма Р.Chaurasiya R., Dahiya S., Sharma R.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/187

In the present paper, investigations of nonlinear optical rectification, absorption coefficient and refractive index in a 1D GaxAl1−xAs/GaAs/GaxAl1−xAs quantum dots under a finite square well potential using simulation software such as COMSOL Multi-Physics and Matlab have been carried out in the presence of electric field, hydrostatic pressure and temperature. Results show that the resonant peaks of ORC (optical rectification coefficient) exhibit a blue shift under increasing of the electric field, while a red shift trailed by a blue shift is displayed under increasing of hydrostatic pressure and temperature. Similar trends take place for the refractive index as well as for the absorption coefficient under changing of the electric field, temperature and hydrostatic pressure. The attained theoretical results would pave a novel opportunity in designing, optimizing and applications of nonlinear opto-electronic devices by tuning the performance of the quantum dots and controlling some of their specific properties.

В настоящей работе проведены исследования нелинейно-оптического выпрямления, коэффициента поглощения и показателя преломления в одномерных квантовых точках GaxAl1-xAs/GaAs/GaxAl1-xAs с прямоугольным потенциалом в присутствии электрического поля, гидростатического давления и температуры с использованием программного обеспечения для моделирования, такого как COMSOL Multi-Physics и Matlab,. Результаты показывают, что резонансные пики ORC (коэффициент оптического выпрямления) демонстрируют синее смещение при увеличении электрического поля, а красное смещение, сопровождаемое затем синим смещением, проявляется при увеличении гидростатического давления и температуры. Аналогичные тенденции имеют место для показателя преломления, а также для коэффициента поглощения при изменении электрического поля, температуры и гидростатического давления. Достигнутые теоретические результаты откроют новые возможности в разработке, оптимизации и применении нелинейных оптоэлектронных устройств путем настройки характеристик квантовых точек и управления некоторыми их специфическими свойствами.

 

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The authors declare that there are no conflicts of interest present.