Technical Faculty of Čačak, Serbian Journal of Electrical Engineering, 1(13), p. 45-58, 2016
DOI: 10.2298/sjee1601045d
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We present a method for modeling nonparabolicity effects (NPE) in quantum nanostructures by using second order perturbation theory. We will analyze application of this model on a quantum well without external electric field and a quantum cascade laser (QCL). This model will allow us to examine the influence of magnetic field on dipole matrix element in QCL structures which will give better insight how NPE can disrupt gain of QCL structures.