Quantum-Dot Cascade Laser: Proposal for an Ultra-Low-Threshold Semiconductor Laser
Condensed Matter
2007-05-23 v1
Abstract
We propose a quantum-dot version of the quantum-well cascade laser of Faist et al. [Science {\bf 264}, 553 (1994)]. The elimination of single phonon decays by the three-dimensional confinement implies a several order-of-magnitude reduction in the threshold current. The requirements on dot size (10-20nm) and on dot density and uniformity [one coupled pair of dots per (180nm)^3 with 5% nonuniformity] are close to current technology.
Cite
@article{arxiv.cond-mat/9605013,
title = {Quantum-Dot Cascade Laser: Proposal for an Ultra-Low-Threshold Semiconductor Laser},
author = {Ned S. Wingreen and Charles A. Stafford},
journal= {arXiv preprint arXiv:cond-mat/9605013},
year = {2007}
}
Comments
8 pages, REVTEX 3.0, 3 compressed postscript figures