Shaer, AyhamDeheliah, DianaKasapoglu, Esin2025-05-042025-05-0420250921-45261873-2135https://doi.org/10.1016/j.physb.2025.417145https://hdl.handle.net/20.500.12418/35462This work has explored the behavior of an electron traversing a two-dimensional InAs quantum ring, affected by an off-center impurity and exposed to a magnetic field. These investigations have involved analyzing the energy spectrum and determining both linear and non-linear absorption coefficients. To solve the Schrodinger equation of the system, the numerical diagonalization method was utilized by using by choosing orthonormal base functions that are solutions of two-dimensional isotropic harmonic oscillator. For the absorption coefficients including the linear and third-order nonlinear terms the standard density matrix formalism combined with the perturbation expansion method is used.en10.1016/j.physb.2025.417145info:eu-repo/semantics/closedAccessQuantum ringImpurityExact diagonalizationOptical propertiesAbsorption coefficientArticle7062-s2.0-86000805390Q2WOS:001449917000001Q2