Linear and nonlinear optical properties in a GaAs quantum dot with disclination under magnetic field and Aharonov-Bohm flux field

In this paper, linear and nonlinear optical properties of a GaAs quantum dot (QD) confined by a parabolic plus inverse square (PIS) potential with a disclination are theoretically studied under the influence of a magnetic field and the Aharonov-Bohm (AB) flux field. To achieve this, the Schrodinger equation for this system is derived, and its solutions of the wave function and the energy levels are obtained using the confluent hypergeometric equation. The effect of the disclination defect on the optical absorption coefficients (OACs) and refractive index changes (RICs) of the PIS quantum dot is examined in detail. The results obtained indicate that the peak positions and amplitudes of the OACs and RICs are significantly affected by changes in the magnitude of the disclination parameter. Furthermore, the effect of the disclination on the peak positions of the OACs and the RICs can be eliminated by adjusting the magnetic field strength.

Automated summary

This paper theoretically studies the linear and nonlinear optical properties of a GaAs quantum dot confined by a parabolic plus inverse square potential with a disclination under the influence of a magnetic field and the Aharonov-Bohm flux field. The Schrodinger equation for this system is derived and its solutions for the wave function and energy levels are obtained using the confluent hypergeometric equation. The effect of the disclination defect on the optical absorption coefficients and refractive index changes of the quantum dot is examined in detail. The results show that changes in the magnitude of the disclination parameter significantly affect the peak positions and amplitudes of the optical absorption coefficients and refractive index changes. Additionally, the effect of the disclination on the peak positions can be eliminated by adjusting the magnetic field strength.