Optimization of InP-based waveguides for high-performance mid-infrared quantum cascade lasers

Oana Malis, Deborah L. Sivco, Jianxin Chen, Liming Zhang, A. Michael Sergent, Zhijun Liu, Claire F. Gmachl

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

Abstract

Using a combination of semiconductor overgrowth, epi-side down mounting, and high-reflectance coating of the back facet, continuous-wave operation up to 320 K of a quantum cascade laser emitting at 8 μm was achieved. In pulsed mode at 300 K the devices exhibit threshold current densities of 1.8 kA/cm 2, peak output powers of 260 mW, and maximum slope efficiencies of 346 mW/A. In cw mode at 300 K the threshold current density was measured to be 2.5-kA/cm2, the slope efficiency was 52 mW/A, and the output power was 20 mW.

Original languageEnglish (US)
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages1453-1454
Number of pages2
DOIs
StatePublished - Dec 1 2007
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: Jul 24 2006Jul 28 2006

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other28th International Conference on the Physics of Semiconductors, ICPS 2006
CountryAustria
CityVienna
Period7/24/067/28/06

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Molecular beam epitaxy
  • Quantum cascade lasers

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    Malis, O., Sivco, D. L., Chen, J., Zhang, L., Sergent, A. M., Liu, Z., & Gmachl, C. F. (2007). Optimization of InP-based waveguides for high-performance mid-infrared quantum cascade lasers. In Physics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B (pp. 1453-1454). (AIP Conference Proceedings; Vol. 893). https://doi.org/10.1063/1.2730454