Measurements of trace pollutants in combustion flows using room-temperature, Mid-IR quantum cascade lasers

Shawn Wehe, David Sonnenfroh, Mark Allen, Claire Gmachl, Federico Capasso

Research output: Contribution to conferencePaper

5 Scopus citations

Abstract

Measurements of CO and NO are reported using thermo-electrically cooled, mid-IR quantum cascade lasers operating near 4.6 and 5.26 μm, respectively. Measurements of NO in H2-air and CH4-air flames at temperatures of approximately 780 and 1600 K are presented along with room-temperature CO measurements. Sensitivities on the order of 1.5 ppm-m are achieved in the case of NO in a flame using a balanced ratiometric detection technique. Comparisons between measured and predicted water-vapor interference is discussed.

Original languageEnglish (US)
DOIs
StatePublished - 2002
Event40th AIAA Aerospace Sciences Meeting and Exhibit 2002 - Reno, NV, United States
Duration: Jan 14 2002Jan 17 2002

Other

Other40th AIAA Aerospace Sciences Meeting and Exhibit 2002
CountryUnited States
CityReno, NV
Period1/14/021/17/02

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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    Wehe, S., Sonnenfroh, D., Allen, M., Gmachl, C., & Capasso, F. (2002). Measurements of trace pollutants in combustion flows using room-temperature, Mid-IR quantum cascade lasers. Paper presented at 40th AIAA Aerospace Sciences Meeting and Exhibit 2002, Reno, NV, United States. https://doi.org/10.2514/6.2002-824