Quantum well width effect on intraband optical absorption in type-II InAs/AlSb nano-scale heterostructure

Abstract

In this paper, we have studied theoretically the effect of width variation of quantum well on energy dispersion curves and transverse electric (TE) and transverse magnetic (TM) Intraband optical absorption coefficients in type-II InAs/AlSb nanoscale heterostructure by utilizing eight bands Kohn–Luttinger Hamiltonian. The outcomes of the calculations made in this work suggest that the optical absorption and transition energies can be enhanced by reducing the width of quantum well (active) region of the designed heterostructure. One more observation is that the polarization modes have no effect on the behaviour of change in transition energy with change in well width.