Nonlinear optical characteristics of thermodynamic effects- and electric field-triggered Mathieu quantum dot

Abstract

In this work, the total refractive index (TRICs) and total absorption coefficients (TACs) of a spherical quantum dot with the Mathieu potential encompassement, generated by using InxGa1−xAs/GaAs heterostructure, and including hydrogenic impurity in its center, under the influence of the temperature, hydrostatic pressure and external electric field are investigated. The compact density matrix formalism and the iterative method are employed to compute the nonlinear optical features. The relevant eigenvalue equation of the Mathieu quantum dot (MQD) is solved by constructing a tridiagonal matrix formalism, within the effective mass approach. As well as the response of TRICs and TACs to external parameters, the alterations concerning structure parameters such as doping concentration and restriction width are also examined. To the best of our knowledge, the external influences and structural parameters on the optical specifications of MQD containing the central impurity are theoretically taken into consideration, for the first time, in the present work. Determining the optimality of optical properties arising from structural and external parameter changes is crucial in terms of providing a theoretical basis for the experimental production and practical use of MQD.