Impurity position effects on the linear and nonlinear optical properties of the cubic quantum dot under an external electric field

KIRAK M., YILMAZ S.

JOURNAL OF PHYSICS D-APPLIED PHYSICS, vol.48, no.32, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 48 Issue: 32
  • Publication Date: 2015
  • Doi Number: 10.1088/0022-3727/48/32/325301
  • Journal Name: JOURNAL OF PHYSICS D-APPLIED PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: quantum dots, hydrogenic impurity, optical properties, REFRACTIVE-INDEX CHANGES, ABSORPTION-COEFFICIENTS, HYDROSTATIC-PRESSURE, HYDROGENIC IMPURITY, BINDING-ENERGY, MAGNETIC-FIELD, DONOR IMPURITY, TEMPERATURE, DENSITY, STATES
  • Yozgat Bozok University Affiliated: Yes

Abstract

The effects of impurity (on-center and off-center) on electronic and linear and nonlinear optical properties (i.e. absorption coefficients and refractive index changes) are investigated in a cubic quantum dot in the presence of an electric field. The energy levels and wave functions are calculated using a variational method within an effective mass approximation. The results show that the existence of impurity, confinement, electric field, and position of impurity have a great effect on the optical characteristics of the system.