Spectral and optical characteristics of spheroidal quantum dots

Abstract

In the framework of effective mass approximation and in strong size quantization regime the absorption coefficients for ensembles of spheroidal quantum dots (SQDs) are analyzed using the eigenvalues and eigenfunctions, calculated by means of Kantorovich and adiabatic methods. The comparison of absorption coefficients for oblate and prolate SQDs with parabolic and non-parabolic dispersion laws reveals different behavior depending on the aspect ratio (ratio of minor to major semiaxis) and the external homogeneous electric fields. The possibility of verification of the considered models is discussed.