Dielectric effect on the optical properties of exciton quantum dot with Gaussian plus generalized Hulthen potential as Pseudo-Harmonic potential

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.