Abstract
In this paper, we have theoretically modeling a ZnSe/ZnSxSe1-x hexagonal core-shell quantum dot (CSQD). The optical and electronic properties of the quantum dot have been obtained by using a numerical method which is based on a combination of coordinate transformation and the finite difference method. The optical properties are obtained by an application of compact-density matrix formalism. The linear, nonlinear and total absorption coefficient, refractive index changes and susceptibilities between the ground state energy of the electron and the first excited state are investigated as a function of photon energy for different dimensions of CSQD, different values of incident optical intensity and different composition x.
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