Impact of temperature and pressure on linear and non-linear optical properties of a spherical quantum dot using Kratzer fues potential

In this paper, analytical expressions for the energy eigenvalues and eigen functions are obtained by solving the radial Schrödinger equation for the Kratzer Fues potential using the Extended Nikiforov–Uvarov method. Further, we calculate linear and nonlinear absorption coefficients and refractive index changes for spherical \({\mathrm{GaAs/Al}}_{0.3}{\textrm{Ga}}_{0.7}{\textrm{As}}\) ${\mathrm{GaAs}/\mathrm{Al}}_{0.3}{\text{Ga}}_{0.7}\text{As}$ quantum dot, considering the effects of temperature and pressure. Our results show that changes in dot size, potential strength, and light intensity greatly impact the optical properties of the quantum dot. These findings help us better understand these nanostructures and provide useful insights for applications in photonics and related fields, where temperature and pressure effects are important.