Abstract
The effects of several key factors on the nonlinear optical properties of spherical quantum dots (QDs) with like-Deng-Fan-Eckart potential are studied theoretically, aiming at nonlinear optical absorption coefficients (OACs) and refractive index changes (RICs). By using the Factorization method to solve the Schrödinger equation, the dependent wave functions and energy levels are determined, and the analytical expressions of OACs and RICs are obtained by making use of the iterative method and density-matrix theory. It is worth noting that the numerical results show that the radius of QDs, the depth of limiting potential and the tuned effective mass have an enormous impact on the peaks and formants of OACs and RICs.
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