Temperature dependence and screening models in quantum cascade structures

Rikard Nelander and Andreas Wacker<br/> Different screening models in quantum cascade lasers are compared by calculating the contribution of intrasubband impurity scattering to the optical linewidth as a function of temperature. We find a strong impact of impurity scattering, which increases substantially with temperature. A simple isotro … [J. Appl. Phys. 106, 063115 (2009)] published Thu Sep 24, 2009.