Theory of quantum dot spin-lasers

Details Theory of quantum dot spin-lasers Theory of quantum dot spin-lasers

2010-09-02

arxiv.org/abs/1009.0324v1

Physical Review B 82, 085316 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 3 figures

Scientific paper

10.1103/PhysRevB.82.085316

We formulate a model of a semiconductor Quantum Dot laser with injection of spin-polarized electrons. As compared to higher-dimensionality structures, the Quantum-Dot-based active region is known to improve laser properties, including the spin-related ones. The wetting layer, from which carriers are captured into the active region, acts as an intermediate level that strongly influences the lasing operation. The finite capture rate leads to an increase of lasing thresholds, and to saturation of emitted light at higher injection. In spite of these issues, the advantageous threshold reduction, resulting from spin injection, can be preserved. The "spin-filtering" effect, i.e., circularly polarized emission at even modest spin-polarization of injection, remains present as well. Our rate-equations description allows to obtain analytical results and provides transparent guidance for improvement of spin-lasers.

Affiliated with

Also associated with

No associations

Rating

Theory of quantum dot spin-lasers does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Theory of quantum dot spin-lasers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of quantum dot spin-lasers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-375257