https://doi.org/10.1140/epjp/s13360-023-03810-y
Regular Article
Optical properties and effect of magnetic field on energy spectra of a GaAs spherical quantum dot
1
Department of Physics, Chaudhary Devi Lal University, 125055, Sirsa, India
2
Department of Physics, S. U. S. Govt. College, 132041, Indri, Karnal, India
3
Department of Physics, Kurukshetra University, 136119, Kurukshetra, India
Received:
18
November
2022
Accepted:
15
February
2023
Published online:
2
March
2023
In the present work, optical absorption coefficients and refractive index changes of a GaAs spherical quantum dot are investigated within the framework of the Coulomb plus linear harmonic potential. To this effect, analytical expressions for energy eigenvalues and corresponding eigen functions are obtained by solving the radial Schrödinger equation by applying the parametric Nikiforov–Uvarov method. Thereafter, using the density matrix formalism, expressions for linear and third-order nonlinear absorption coefficients along with refractive index changes are computed and plotted. Effect of the radius of quantum dot, the potential height and the incident light intensity on these quantities are further investigated and found in good agreement with literature results. The effect of external magnetic field on the energy spectra of the quantum dot is also presented.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
