Eur. Phys. J. B (2012) 85: 344
https://doi.org/10.1140/epjb/e2012-30361-2

Regular Article

The electric field effects on the third-harmonic generation in spherical quantum dots with parabolic confinement

¹ Department of Science Education, Faculty of Education, Bozok University, 66100 Yozgat, Turkey
² Institute of Science, Bozok University, 66100 Yozgat, Turkey

^a e-mail: muharrem.kirak@bozok.edu.tr

Received: 4 May 2012
Received in final form: 2 July 2012
Published online: 15 October 2012

Abstract

The influence of an external electric field on the binding energies of the ground state and excited states with the third-harmonic-generation (THG) coefficient for spherical quantum dot (QD) with parabolic confinement is investigated theoretically. The energy levels and wave functions of electronic states in the QDs are calculated using by variational method within the effective-mass approximation. The numerical results demonstrate that the THG coefficient very sensitively depends on the magnitude of the electric field and the radius of the QDs. In addition, the THG coefficient also depends on the relaxation rate of the spherical QD with parabolic confinement and the position of impurity.