Single-mode instability and multi-mode instability of quantum-cascade lasers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we have reported the study on instability mechanisms of mid-infrared (MIR) quantum-cascade lasers (QCLs) with Fabry--Perot cavity. Both the saturable absorber (SA) and spatial hole burning (SHB) effects have been included in the analysis. We found that the single-mode and multi-mode instabilities can coexist in the quantum-cascade medium. The multi-mode instability has been observed to be similar to the coherent Risken - Nummedal - Graham - Haken (RNGH) instability, and the single-mode instability has been found to be associated with SHB effect. These results are different from those previously reported in the literature. The linear stability analysis is based on the linearization of Maxwell - Bloch formulism. There are two differences between our analysis and that presented in the literature. One difference lies in the treatment of the complex quantities, while the other is the algorithm for decoupling various instability mechanisms. Furthermore, we have also discussed about the effects of the saturable absorber on the two instability mechanisms. The saturable absorber effect can enhance both kinds of instabilities through lowering their instability thresholds, while the effect on the multi-mode instability is predicted to be more significant.

Original languageEnglish (US)
Title of host publication2010 10th IEEE Conference on Nanotechnology, NANO 2010
Pages815-820
Number of pages6
DOIs
StatePublished - Dec 1 2010
Event2010 10th IEEE Conference on Nanotechnology, NANO 2010 - Ilsan, Gyeonggi-Do, Korea, Republic of
Duration: Aug 17 2010Aug 20 2010

Publication series

Name2010 10th IEEE Conference on Nanotechnology, NANO 2010

Other

Other2010 10th IEEE Conference on Nanotechnology, NANO 2010
CountryKorea, Republic of
CityIlsan, Gyeonggi-Do
Period8/17/108/20/10

Keywords

  • Multi-mode instability
  • Quantum-cascade lasers
  • Single-mode instability

Fingerprint Dive into the research topics of 'Single-mode instability and multi-mode instability of quantum-cascade lasers'. Together they form a unique fingerprint.

  • Cite this

    Bai, J., & Zhou, D. (2010). Single-mode instability and multi-mode instability of quantum-cascade lasers. In 2010 10th IEEE Conference on Nanotechnology, NANO 2010 (pp. 815-820). [5697829] (2010 10th IEEE Conference on Nanotechnology, NANO 2010). https://doi.org/10.1109/NANO.2010.5697829