Nonlinear Optical Rectification and Oscillator Strength in a Spherical Quantum Dot with an Off-Center Hydrogenic Impurity in Presence of an Applied Electric Field

Yilmaz S.

JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE, vol.10, no.9, pp.2019-2025, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 9
  • Publication Date: 2013
  • Doi Number: 10.1166/jctn.2013.3163
  • Journal Name: JOURNAL OF COMPUTATIONAL AND THEORETICAL NANOSCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2019-2025
  • Keywords: Optical Rectification, Oscillator Strength, Hydrogenic Impurity, Quantum Dots, Electric Field, PHOTOIONIZATION CROSS-SECTION, BINDING-ENERGY, ABSORPTION COEFFICIENTS, HYDROSTATIC-PRESSURE, DONOR IMPURITY, STATES, TRANSITIONS, EXCITON
  • Yozgat Bozok University Affiliated: Yes

Abstract

The binding energies of ground state and excited states and the second-order nonlinear optical rectification and oscillator strength in a spherical quantum dot having parabolic confinement with an off-center hydrogenic impurity under an applied electric field have been theoretically studied. In the calculations, a variational procedure was employed within the effective-mass approximation. We have found that the binding energies of the ground state (0s), the first and second excited states (1p, 2d), respectively, the second-order nonlinear optical rectification coefficient and oscillator strength for 0s - 1p and 1p - 2d transitions depend on the applied electric field. Moreover, the results demonstrate that the position of impurity has a great influence on the nonlinear optical rectification.