Reproducible N2O measurement in diluted vehicle exhaust gases by using of QCL technology.

Quantum Cascade Laser QCL / N2O

AIP's Quantum Cascade Laser (QCL) is used to measure nitrous oxide (N2O) in the diluted exhaust gas. The modules are available both as a ½-19" rack for the EMS and as a 19" rack in a stand-alone version for flue gas measurement. Various sampling systems can be customized.



  • Highly precise measurement method in the ppb range and thus a wide dynamic measurement range
  • No span calibration needed
  • High selectivity and low cross-sensitivity
  • High reliability and long-term stability through differential measurement and thus high measurement quality
  • No additional operating media required
  • High variability in the measurement setup with compact dimensions


  • Integration into existing test bench systems
  • Use on the roller or engine test stand
  • To determine the emissions according to:
    • 40 CFR US §1065/66
    • EU 2017/1151
    • Japan Trias 60
    • China C6, GB 18352.6-2016
    • Korea MOE Notification