Single mode quantum cascade DFB-lasers with metal Bragg gratings

J Seufert*, J Koeth, M Fischer, S Hofling, JP Reithmaier, A Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have developed quantum cascade Fabry-Perot and DFB lasers based on GaAs with emission wavelengths around 9...11 mu m. This wavelength range is particularly suitable for the sensitive detection and monitoring of a variety of important pollutant gases such as CO2 (9.5 mu m), O-3 (9.7 mu m), and NH3 (10.7 mu m) or for investigations of liquids. The lasers are mounted on standard c-mounts and can easily be incorporated into a module. In pulsed mode these devices emit peak power levels of a few mW at Peltier temperatures and exhibit continuous wavelength tuning by temperature and current.

Original languageUndefined/Unknown
Pages (from-to)374-379
Number of pages6
JournalTm-Technisches messen
Issue number6
Publication statusPublished - Jun 2005


  • quantum cascade laser
  • gas sensing
  • DFB laser
  • mid-infrared
  • spectroscopy

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