Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser

Phillips, Mark C.; Taubman, Matthew S.; Bernacki, Bruce E.; Cannon, Bret D.; Stahl, Robert D.; Schiffern, John T.; Myers, Tanya L.

doi:10.1039/c3an01642k

Title: Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser

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Abstract

We present results demonstrating real-time sensing of four different fluorocarbons at low-ppb concentrations using an external cavity quantum cascade laser (ECQCL) operating in a swept-wavelength configuration. The ECQCL was repeatedly swept over its full tuning range at a 20 Hz rate with a scan rate of 3535 cm-1/s, and a detailed characterization of the ECQCL scan stability and repeatability is presented. The sensor was deployed on a mobile automotive platform to provide spatially resolved detection of fluorocarbons in outdoor experiments. Noise-equivalent detection limits of 800-1000 parts-per-trillion (ppt) are demonstrated for 1 s integration times.

Authors:: Phillips, Mark C.; Taubman, Matthew S.; Bernacki, Bruce E.; Cannon, Bret D.; Stahl, Robert D.; Schiffern, John T.; Myers, Tanya L.

Publication Date:: Sun May 04 00:00:00 EDT 2014

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1132217

Report Number(s):: PNNL-SA-98151
NN2001000

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: Analyst, 139(9):2047-2056

Additional Journal Information:: Journal Name: Analyst, 139(9):2047-2056

Country of Publication:: United States

Language:: English

Subject:: infrared spectroscopy; quantum cascade laser; trace gas sensing

Citation Formats


                    Phillips, Mark C., Taubman, Matthew S., Bernacki, Bruce E., Cannon, Bret D., Stahl, Robert D., Schiffern, John T., and Myers, Tanya L. Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser.  United States: N. p., 2014. 
        Web.  doi:10.1039/c3an01642k.

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                    Phillips, Mark C., Taubman, Matthew S., Bernacki, Bruce E., Cannon, Bret D., Stahl, Robert D., Schiffern, John T., & Myers, Tanya L. Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser.  United States.  https://doi.org/10.1039/c3an01642k

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                    Phillips, Mark C., Taubman, Matthew S., Bernacki, Bruce E., Cannon, Bret D., Stahl, Robert D., Schiffern, John T., and Myers, Tanya L. 2014.  
        "Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser".  United States.  https://doi.org/10.1039/c3an01642k.

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@article{osti_1132217,

  title        = {Real-Time Trace Gas Sensing of Fluorocarbons using a Swept-wavelength External Cavity Quantum Cascade Laser},

  author       = {Phillips, Mark C. and Taubman, Matthew S. and Bernacki, Bruce E. and Cannon, Bret D. and Stahl, Robert D. and Schiffern, John T. and Myers, Tanya L.},

  abstractNote = {We present results demonstrating real-time sensing of four different fluorocarbons at low-ppb concentrations using an external cavity quantum cascade laser (ECQCL) operating in a swept-wavelength configuration. The ECQCL was repeatedly swept over its full tuning range at a 20 Hz rate with a scan rate of 3535 cm-1/s, and a detailed characterization of the ECQCL scan stability and repeatability is presented. The sensor was deployed on a mobile automotive platform to provide spatially resolved detection of fluorocarbons in outdoor experiments. Noise-equivalent detection limits of 800-1000 parts-per-trillion (ppt) are demonstrated for 1 s integration times.},

  doi          = {10.1039/c3an01642k},

  url          = {https://www.osti.gov/biblio/1132217},
  journal      = {Analyst, 139(9):2047-2056},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sun May 04 00:00:00 EDT 2014},

  month        = {Sun May 04 00:00:00 EDT 2014}

}

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