ABSTRACT

The electronic continuum states of InAs/GaAs semiconductor quantum dots (QDs) embedded in a GaAs/AIAs superlattice are theoretically investigated and the mid-infrared absorption spectra are calculated for InAs QDs embedded in an AlAs/GaAs superlattice and z polarization. The effect of a strong magnetic field applied parallel to the growth direction is also investigated. We predict that the flatness of the InAs/GaAs dots leads to a mid-infrared absorption which is almost insensitive to the magnetic field, in spite of the reorganization of the continuum into series of quasi-Landau states.