Recent results in quantum cascade lasers and applications

Claire F. Gmachl, Federico Capasso, Alessandro Tredicucci, Rüdeger Köhler, Albert L. Hutchinson, Deborah L. Sivco, James N. Baillargeon, Alfred Y. Cho

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

Abstract

Recent advances in quantum cascade (QC) lasers include widely tunable single-mode distributed feedback (DFB) lasers with high optical power at λ ≈ 4.6 μm, and single-mode DFB lasers at λ ≈ 16 μm based on new surface plasmon waveguides with dual-metal gratings. Single-mode and tunable QC-DFB lasers have successfully been used in many collaborations for various trace-gas sensing applications. Examples are the detection of stratospheric methane and nitrous oxide, the sub-ppbv detection of ammonia by cavity ring down spectroscopy, methane concentration and isotopic composition measurements, and the detection of complex molecules in open air by direct absorption spectroscopy. The versatility of band structure engineering enabled the design and realization of QC-lasers, which operate under both, positive and negative polarity displaying distinct characteristics in each polarity if an asymmetric structure is employed.

Original languageEnglish (US)
Title of host publicationProceedings of the 8th International Symposium Nanostructures
Subtitle of host publicationPhysics and Technology
EditorsZh. alferov, L. Esaki, ZH. Alferov, L. Esaki
Pages546-550
Number of pages5
StatePublished - Dec 1 2000
Externally publishedYes
EventProceedings of the 8th International Symposium Nanostructures: Physics and Technology - St. Petersburg, Russian Federation
Duration: Jun 19 2000Jun 23 2000

Publication series

NameProceedings of the 8th International Symposium Nanostructures: Physics and Technology

Other

OtherProceedings of the 8th International Symposium Nanostructures: Physics and Technology
CountryRussian Federation
CitySt. Petersburg
Period6/19/006/23/00

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Gmachl, C. F., Capasso, F., Tredicucci, A., Köhler, R., Hutchinson, A. L., Sivco, D. L., Baillargeon, J. N., & Cho, A. Y. (2000). Recent results in quantum cascade lasers and applications. In Z. alferov, L. Esaki, ZH. Alferov, & L. Esaki (Eds.), Proceedings of the 8th International Symposium Nanostructures: Physics and Technology (pp. 546-550). (Proceedings of the 8th International Symposium Nanostructures: Physics and Technology).