Effect of incident light polarization on optical properties of an ellipsoidal quantum dot

The optical properties of an ellipsoidal quantum dot (EQD) with parabolic confinement potential in the presence of polarized laser field are considered. The linear, nonlinear, total absorption coefficient and refractive index as functions of the incident photon energy, photon intensity and ellipsoidal parameter for the different values of the confinement strength are calculated. The results show that the total absorption coefficient of an EQD increases with increases in the ellipticity parameter and oscillator strength. The relative change in refractive index increases (decreases) with ellipticity parameter (oscillator strength). The results are in agreement with other investigations.

The variations of linear, nonlinear and total absorption coefficients in EQD in terms of ellipticity parameter .Figure optionsDownload as PowerPoint slideHighlights
► A suitable change of variable transforms an ellipsoidal quantum dot into a spherical quantum dot.
► The energy levels of carriers are calculated for different ellipticity constants.
► The optical properties of ellipsoidal quantum dot are considered under polarized laser field.
► Absorption coefficients in terms of ellipticity parameter and photon intensity are calculated.
► The refractive index as functions of incident photon energy and oscillator strength is calculated.