CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy

Yu, Yajun; Sanchez, Nancy P.; Griffin, Robert J.; Tittel, Frank K.

doi:10.1364/OE.24.010391

Title: CW EC-QCL-based sensor for simultaneous detection of H₂O, HDO, N₂O and CH₄ using multi-pass absorption spectroscopy

Abstract

A sensor system based on a continuous wave, external-cavity quantum-cascade laser (CW EC-QCL) was demonstrated for simultaneous detection of atmospheric H₂O, HDO, N₂O and CH₄ using a compact, dense pattern multi-pass gas cell with an effective path-length of 57.6 m. The EC-QCL with a mode-hop-free spectral range of 1225-1285 cm^-1 operating at similar to 7.8 mu m was scanned covering four neighboring absorption lines, for H₂O at 1281.161 cm^-1, HDO at 1281.455 cm^-1, N₂O at 1281.53 cm^-1 and CH₄ at 1281.61 cm^-1. A first-harmonic-normalized wavelength modulation spectroscopy with second-harmonic detection (WMS-2f/1f) strategy was employed for data processing. An Allan-Werle deviation analysis indicated that minimum detection limits of 1.77 ppmv for H₂O, 3.92 ppbv for HDO, 1.43 ppbv for N₂O, and 2.2 ppbv for CH₄ were achieved with integration times of 50-s, 50-s, 100-s and 129-s, respectively. In conclusion, experimental measurements of ambient air are also reported.

Authors:

Yu, Yajun ^[1]; Sanchez, Nancy P. ^[2]; Griffin, Robert J. ^[2]; Tittel, Frank K. ^[3]

Rice Univ., Houston, TX (United States). Dept. of Electrical and Computer Engineering; Wuhan Univ., Wuhan (China). School of Electronic Information
Rice Univ., Houston, TX (United States). Dept. of Civil and Environmental Engineering
Rice Univ., Houston, TX (United States). Dept. of Electrical and Computer Engineering

Publication Date:: Tue May 03 00:00:00 EDT 2016

Research Org.:: Rice Univ., Houston, TX (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1286129

Grant/Contract Number:: AR0000545; AR0000547

Resource Type:: Accepted Manuscript

Journal Name:: Optics Express

Additional Journal Information:: Journal Volume: 24; Journal Issue: 10; Journal ID: ISSN 1094-4087

Publisher:: Optical Society of America (OSA)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; wavelength-modulation-spectroscopy; quantum-cascade laser; atmospheric nitrous-oxide; trace-gas detection; formaldehyde detection; water-vapor; methane; temperature; cell

Citation Formats


                    Yu, Yajun, Sanchez, Nancy P., Griffin, Robert J., and Tittel, Frank K. CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy.  United States: N. p., 2016. 
Web.  doi:10.1364/OE.24.010391.

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                    Yu, Yajun, Sanchez, Nancy P., Griffin, Robert J., & Tittel, Frank K. CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy.  United States.  https://doi.org/10.1364/OE.24.010391

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                    Yu, Yajun, Sanchez, Nancy P., Griffin, Robert J., and Tittel, Frank K. Tue .  
"CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy".  United States.  https://doi.org/10.1364/OE.24.010391.  https://www.osti.gov/servlets/purl/1286129.

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@article{osti_1286129,

  title        = {CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy},

  author       = {Yu, Yajun and Sanchez, Nancy P. and Griffin, Robert J. and Tittel, Frank K.},

  abstractNote = {A sensor system based on a continuous wave, external-cavity quantum-cascade laser (CW EC-QCL) was demonstrated for simultaneous detection of atmospheric H2O, HDO, N2O and CH4 using a compact, dense pattern multi-pass gas cell with an effective path-length of 57.6 m. The EC-QCL with a mode-hop-free spectral range of 1225-1285 cm-1 operating at similar to 7.8 mu m was scanned covering four neighboring absorption lines, for H2O at 1281.161 cm-1, HDO at 1281.455 cm-1, N2O at 1281.53 cm-1 and CH4 at 1281.61 cm-1. A first-harmonic-normalized wavelength modulation spectroscopy with second-harmonic detection (WMS-2f/1f) strategy was employed for data processing. An Allan-Werle deviation analysis indicated that minimum detection limits of 1.77 ppmv for H2O, 3.92 ppbv for HDO, 1.43 ppbv for N2O, and 2.2 ppbv for CH4 were achieved with integration times of 50-s, 50-s, 100-s and 129-s, respectively. In conclusion, experimental measurements of ambient air are also reported.},

  doi          = {10.1364/OE.24.010391},

  journal      = {Optics Express},

  number       = 10,

  volume       = 24,

  place        = {United States},

  year         = {Tue May 03 00:00:00 EDT 2016},

  month        = {Tue May 03 00:00:00 EDT 2016}

}

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Works referencing / citing this record:

Real-time breath gas analysis of CO and CO2 using an EC-QCL
journal, April 2017

Ghorbani, Ramin; Schmidt, Florian M.
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Title: CW EC-QCL-based sensor for simultaneous detection of H2O, HDO, N2O and CH4 using multi-pass absorption spectroscopy

Abstract

Citation Formats

Simultaneous atmospheric nitrous oxide, methane and water vapor detection with a single continuous wave quantum cascade laser journal, January 2015

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Direct and wavelength modulation spectroscopy using a cw external cavity quantum cascade laser journal, May 2009

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Title: CW EC-QCL-based sensor for simultaneous detection of H₂O, HDO, N₂O and CH₄ using multi-pass absorption spectroscopy

Simultaneous atmospheric nitrous oxide, methane and water vapor detection with a single continuous wave quantum cascade laser
journal, January 2015

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journal, July 2012

Non-CO2 greenhouse gases and climate change
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Effective utilization of quantum-cascade distributed-feedback lasers in absorption spectroscopy
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Direct and wavelength modulation spectroscopy using a cw external cavity quantum cascade laser
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A formaldehyde trace gas sensor based on a thermoelectrically cooled CW-DFB quantum cascade laser
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