Continuous monitoring of nitric oxide at 5.33 μm with an EC-QCL based faraday rotation spectrometer: Laboratory and field system performance

Gerard Wysocki, Rafal Lewicki, Xue Huang, Robert F. Curl, Frank K. Tittel

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations

Abstract

Nitric oxide detection with Faraday rotation spectroscopy offers excellent sensitivity and high specificity together with outstanding long term system performance. Development of a transportable, cryogen-free, prototype field instrument based on mode-hop-free external cavity quantum cascade laser targeting the optimum NO Q(3/2) transition at 1875.8 cm-1 is reported . The system shows a minimum detection limit of 5.4 ppb with a lsec. lock-in time constant. Continuous, unattended NO monitoring with >1 hour white noise limited averaging times is reported.

Original languageEnglish (US)
Article number72220M
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume7222
DOIs
StatePublished - Mar 23 2009
EventQuantum Sensing and Nanophotonic Devices VI - San Jose, CA, United States
Duration: Jan 25 2009Jan 28 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Keywords

  • Faraday effect
  • Nitric oxide
  • Quantum cascade laser; laser spectroscopy
  • Trace-gas detection

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