In this work, we have performed a detailed investigation on optical properties for CdS/ZnSe spherical core/shell quantum dots surrounded by various dielectric matrices such as PVA, PMMA and SiO₂. The wave functions and eigenenergies of confined electrons have been theoretically computed using the effective-mass formalism and the density matrix approach. The linear and third-order nonlinear optical properties have been evaluated for different matrices. Our results demonstrated that the linear, third order nonlinear optical absorption coefficients and refractive index changes are considerably sensitive to the geometrical parameters, the incident optical intensity and the dielectric environment.

在这项工作中，我们对CdS / ZnSe球形核/壳量子点的光学特性进行了详细的研究，这些量子点被各种介电基质如PVA，PMMA和SiO ₂包围。理论上已经使用有效质量形式主义和密度矩阵方法计算了受限电子的波函数和本征能。已经针对不同的矩阵评估了线性和三阶非线性光学特性。我们的结果表明，线性，三阶非线性光学吸收系数和折射率变化对几何参数，入射光强度和介电环境非常敏感。