Regular Article – Optical Phenomena and Photonics

Nonlinear optical properties in GaAs/Al_0.3Ga_0.7As quantum dots of inversely quadratic Hellmann plus Kratzer potential

School of Mechanics and Photoelectric Physics, Anhui University of Science and Technology, 232001, Huainan, China

^b xuechao80@126.com

Received: 12 May 2022
Accepted: 1 July 2022
Published online: 29 July 2022

Abstract

In this paper, we study in detail the effects of some factors on the optical absorption coefficients (OACs) and refractive index changes (RICs) in spherical quantum dots (QDs) with inversely quadratic Hellmann plus Kratzer potential. Firstly, Schrödinger equation related to confined QDs system is used by Nikiforov–Uvarov method, and the analytical expressions of different energy levels and wave functions are obtained. Then, the OACs and RICs are calculated by using compact density matrix theory and iterative method. Finally, numerical simulation denotes that these factors have an obvious influence on the nonlinear optical characteristics of the system.