Mid-infrared detection of trace biogenic species using compact QCL based integrated cavity output spectroscopy (ICOS)

Michelle L. Silva; Richard T. Wainner; David M. Sonnenfroh; David I. Rosen; Mark G. Allen; Terence H. Risby

doi:10.1117/12.629993

Mid-infrared detection of trace biogenic species using compact QCL based integrated cavity output spectroscopy (ICOS)

Michelle L. Silva, Richard T. Wainner, David M. Sonnenfroh, David I. Rosen, Mark G. Allen, Terence H. Risby

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

Mid infrared Quantum Cascade (QCL) and Interband Cascade Lasers (ICL) coupled with cavity-enhanced techniques, have proven to be sensitive optical diagnostic tools for both atmospheric sensing as well as breath analysis. In this work, a TE-cooled, pulsed QCL and a cw ICL are coupled to high finesse cavities, for trace gas measurements of nitric oxide, carbon dioxide, carbon monoxide and ethane. QCL's operating at 5.26 μm and 4.6 μm were used to record ICOS spectra for NO, CO ₂, and CO. ICOS spectra of C ₂H ₆ were recorded at 3.35 μm using an ICL. Ringdown decay times on the order to 2-3 μs are routinely obtained for a 50 cm cavity resulting in effective pathlengths on the order of 1000 meters. The sample cell is compact with a volume of only 60ml. Details of the QCL and ICL cavity enhanced spectrometers are presented along with the detection results for trace gas species. Here we report a detection limit of 0.7 ppbv in 4 s for NO in simulated breath samples as well as human breath samples. A preliminary detection limit of 250 pptv in 4 s for CO is obtained and 35 ppb in 0.4 s for C ₂H ₆.

Original language	English (US)
Article number	60100E
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	6010
DOIs	https://doi.org/10.1117/12.629993
State	Published - 2005
Externally published	Yes
Event	Infrared to Terahertz Technologies for Health and the Environment - Boston, MA, United States Duration: Oct 24 2005 → Oct 25 2005

Keywords

Breath analysis
Quantum cascade lasers

ASJC Scopus subject areas

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

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10.1117/12.629993

Cite this

Mid-infrared detection of trace biogenic species using compact QCL based integrated cavity output spectroscopy (ICOS). / Silva, Michelle L.; Wainner, Richard T.; Sonnenfroh, David M. et al.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 6010, 60100E, 2005.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "Mid infrared Quantum Cascade (QCL) and Interband Cascade Lasers (ICL) coupled with cavity-enhanced techniques, have proven to be sensitive optical diagnostic tools for both atmospheric sensing as well as breath analysis. In this work, a TE-cooled, pulsed QCL and a cw ICL are coupled to high finesse cavities, for trace gas measurements of nitric oxide, carbon dioxide, carbon monoxide and ethane. QCL's operating at 5.26 μm and 4.6 μm were used to record ICOS spectra for NO, CO 2, and CO. ICOS spectra of C 2H 6 were recorded at 3.35 μm using an ICL. Ringdown decay times on the order to 2-3 μs are routinely obtained for a 50 cm cavity resulting in effective pathlengths on the order of 1000 meters. The sample cell is compact with a volume of only 60ml. Details of the QCL and ICL cavity enhanced spectrometers are presented along with the detection results for trace gas species. Here we report a detection limit of 0.7 ppbv in 4 s for NO in simulated breath samples as well as human breath samples. A preliminary detection limit of 250 pptv in 4 s for CO is obtained and 35 ppb in 0.4 s for C 2H 6.",

keywords = "Breath analysis, Quantum cascade lasers",

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AU - Silva, Michelle L.

AU - Wainner, Richard T.

AU - Sonnenfroh, David M.

AU - Rosen, David I.

AU - Allen, Mark G.

AU - Risby, Terence H.

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AB - Mid infrared Quantum Cascade (QCL) and Interband Cascade Lasers (ICL) coupled with cavity-enhanced techniques, have proven to be sensitive optical diagnostic tools for both atmospheric sensing as well as breath analysis. In this work, a TE-cooled, pulsed QCL and a cw ICL are coupled to high finesse cavities, for trace gas measurements of nitric oxide, carbon dioxide, carbon monoxide and ethane. QCL's operating at 5.26 μm and 4.6 μm were used to record ICOS spectra for NO, CO 2, and CO. ICOS spectra of C 2H 6 were recorded at 3.35 μm using an ICL. Ringdown decay times on the order to 2-3 μs are routinely obtained for a 50 cm cavity resulting in effective pathlengths on the order of 1000 meters. The sample cell is compact with a volume of only 60ml. Details of the QCL and ICL cavity enhanced spectrometers are presented along with the detection results for trace gas species. Here we report a detection limit of 0.7 ppbv in 4 s for NO in simulated breath samples as well as human breath samples. A preliminary detection limit of 250 pptv in 4 s for CO is obtained and 35 ppb in 0.4 s for C 2H 6.

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Mid-infrared detection of trace biogenic species using compact QCL based integrated cavity output spectroscopy (ICOS)

Abstract

Keywords

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