Temperature Dependence and Screening Models in Quantum Cascade Structure
Mesoscale and Nanoscale Physics
2009-09-30 v1
Abstract
Different screening models in quantum cascade lasers are compared by calculating the contribution of intra-subband impurity scattering to the optical linewidth as a function of temperature. We find a strong impact of impurity scattering which is increasing substantially with temperature. A simple isotropic bulk screening model works well if the screening length is of the order or longer than the period length of the cascade structure.
Cite
@article{arxiv.0908.4159,
title = {Temperature Dependence and Screening Models in Quantum Cascade Structure},
author = {Rikard Nelander and Andreas Wacker},
journal= {arXiv preprint arXiv:0908.4159},
year = {2009}
}
Comments
7 pages, 9 figures