Eur. Phys. J. Plus (2021) 136: 372
https://doi.org/10.1140/epjp/s13360-021-01370-7

Regular Article

The effect of impurity position and doping concentration on the binding energies and total optical absorption coefficients in a -doped quantum well

¹ Department of Naval Architecture and Marine Engineering, Faculty of Engineering, Piri Reis University, 34940, Istanbul, Turkey
² , Ankara, Turkey
³ Centro de Investigación en Ciencias-IICBA, Universidad Autónoma del Estado de Morelos, Ave. Universidad 1001, CP 62209, Cuernavaca, Morelos, Mexico
⁴ Department of Optical Engineering, Faculty of Technology, Sivas Cumhuriyet University, 58140, Sivas, Turkey

^a asdurmuslar@pirireis.edu.tr

Received: 8 February 2021
Accepted: 27 March 2021
Published online: 8 April 2021

Abstract

In this present work, for different impurity position and ionized doping concentrations, we have theoretically investigated the linear, third-order nonlinear, and total optical absorption coefficients corresponding to the intersubband transitions between the ground and first-excited conduction band states in a single -doped GaAs well, with and without the presence of a donor impurity. Impurity binding energies were calculated using the effective-mass and parabolic band approximations within a variational scheme. The linear, third-order nonlinear, and total optical absorption coefficients for the intersubband transitions are calculated within the compact density matrix approach. The obtained results show that adding an impurity positioned at the symmetry center of the well, as well as the increase in the ionized donor concentrations, shifts the total optical absorption coefficients to higher photon energies. However, the off-center positions of impurities together with the varying ionized donor concentrations lead to blue or red shifts in relation to the values of binding energies. The results in this study may be useful for the design and applications of the devices based on the -doped structures.