Abstract

The dielectric effect on the intersubband optical properties for a core/shell quantum dots system is investigated with the Gaussian plus generalized Hulthen potential as a Pseudo-Harmonic potential model. The analytical solutions of the bound states energy and eigenfunctions were calculated using the Nikiforov–Uvarov (N–U). A detailed investigation of the linear dielectric function, third-order nonlinear dielectric function, total absorptions coefficient, and the transmission coefficient has been examined using the density matrix formalisms. Our result reveals that the dielectric constant affects the core materials and enhances the spectra shift, while the shell materials for both materials examined remains constant at zero photon-energy levels.

Graphical abstract

中文翻译：

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高斯加广义Hulthen势作为伪谐波势对激子量子点光学性质的介电效应

摘要

使用高斯加广义Hulthen势作为伪谐波势模型，研究了核/壳量子点系统对子带间光学性质的介电效应。使用Nikiforov–Uvarov（N–U）计算出束缚态能量和本征函数的解析解。线性介电函数，三阶非线性介电函数，总吸收系数和透射系数的详细研究已使用密度矩阵形式主义进行了研究。我们的结果表明，介电常数会影响核心材料并增强光谱偏移，而两种材料的壳材料在零光子能级下均保持恒定。

图形概要