The effect of conduction band non-parabolicity on inter-sub-band absorption in doped quantum wells

Abstract

The authors have theoretically treated the effect of conduction band non-parabolicity on inter-sub-band absorption in doped semiconductor quantum wells. The authors have derived an analytical expression for the absorption at zero temperature. The absorption peak is shifted to lower energies and the peak height is reduced by non-parabolicity. These effects are small for GaAs-based quantum wells, but may be detrimental to InGaAs quantum wells.