Self-Consistent Theory of the Gain Linewidth for Quantum Cascade Lasers
Other Condensed Matter
2007-05-23 v2 Mesoscale and Nanoscale Physics
Abstract
The linewidth in intersubband transitions can be significantly reduced below the sum of the lifetime broadening for the involved states, if the scattering environment is similar for both states. This is studied within a nonequilibrium Green function approach here. We find that the effect is of particular relevance for a recent, relatively low doped, THz quantum cascade laser.
Keywords
Cite
@article{arxiv.cond-mat/0410476,
title = {Self-Consistent Theory of the Gain Linewidth for Quantum Cascade Lasers},
author = {F. Banit and S. -C. Lee and A. Knorr and A. Wacker},
journal= {arXiv preprint arXiv:cond-mat/0410476},
year = {2007}
}
Comments
3 pages, figures included