Effects of the confinement potential parameters and optical intensity on the linear and nonlinear optical properties of spherical quantum dots

Abstract

We study the linear and nonlinear optical properties of a spherical GaAs quantum dot with screened modified Kratzer potential (SMKP) by solving the time-independent Schrödinger wave equation using the diagonalization method. The obtained electronic properties of the system alongside the compact density formalism are used to evaluate the linear, third-order nonlinear and total optical absorption coefficients and change in the relative refractive index of the system. We show that the confinement potential parameters and optical intensity significantly affects the behaviour of absorption coefficients and refractive index changes. It is important to note that the findings of this study will find application in optoelectronics and related areas.

Keywords

• Schrödinger equation
• Screened modified Kratzer potential (SMKP)
• Refractive index
• Absorption coefficient
• Optical transitions
• Diagonalization method