Sensing of gaseous HF at low part-per-trillion levels using a tunable 2.5-µm diode laser spectrometer operating at ambient pressure

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

doi:10.1007/s00340-015-6159-0

Sensing of gaseous HF at low part-per-trillion levels using a tunable 2.5-µm diode laser spectrometer operating at ambient pressure

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

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We demonstrate a sensor based on tunable diode laser absorption spectroscopy for the detection of hydrogen fluoride (HF) gas at ambient pressure. Absorption from the HF R(1) ro-vibrational peak at ν̃ = 4038.962 cm⁻¹ (2.476 µm) in the fundamental (Δν = 1) band is measured. A quantitative spectral fit based on HITRAN data is used to account for overlapping spectral peaks of HF and water vapor, with an rms residual noise of 5 × 10⁻⁴ absorbance units. The sensor is optimized for the detection of transient variations in HF concentration. We measure noise-equivalent concentrations for HF of 38 parts-per-trillion by volume (ppt) for 1-s integration times and 2.3 ppt for 10-min integration times.

Original language	English (US)
Pages (from-to)	505-515
Number of pages	11
Journal	Applied Physics B: Lasers and Optics
Volume	120
Issue number	3
DOIs	https://doi.org/10.1007/s00340-015-6159-0
State	Published - Sep 12 2015
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

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title = "Sensing of gaseous HF at low part-per-trillion levels using a tunable 2.5-µm diode laser spectrometer operating at ambient pressure",

abstract = "We demonstrate a sensor based on tunable diode laser absorption spectroscopy for the detection of hydrogen fluoride (HF) gas at ambient pressure. Absorption from the HF R(1) ro-vibrational peak at {\~ν} = 4038.962 cm−1 (2.476 µm) in the fundamental (Δν = 1) band is measured. A quantitative spectral fit based on HITRAN data is used to account for overlapping spectral peaks of HF and water vapor, with an rms residual noise of 5 × 10−4 absorbance units. The sensor is optimized for the detection of transient variations in HF concentration. We measure noise-equivalent concentrations for HF of 38 parts-per-trillion by volume (ppt) for 1-s integration times and 2.3 ppt for 10-min integration times.",

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

note = "Funding Information: The authors would like to thank Charles Brown and the PNNL Health Monitoring & Radio Frequency Sensors group for the use of their environmental chamber. The Pacific Northwest National Laboratory is operated for the US Department of Energy (DOE) by the Battelle Memorial Institute under Contract No. DE-AC05-76RL01830. Publisher Copyright: {\textcopyright} 2015, Springer-Verlag Berlin Heidelberg.",

year = "2015",

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day = "12",

doi = "10.1007/s00340-015-6159-0",

language = "English (US)",

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journal = "Applied Physics B: Lasers and Optics",

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T1 - Sensing of gaseous HF at low part-per-trillion levels using a tunable 2.5-µm diode laser spectrometer operating at ambient pressure

AU - Craig, Ian M.

AU - Cannon, Bret D.

AU - Taubman, Matthew S.

AU - Bernacki, Bruce E.

AU - Stahl, Robert D.

AU - Schiffern, John T.

AU - Myers, Tanya L.

AU - Phillips, Mark C.

N1 - Funding Information: The authors would like to thank Charles Brown and the PNNL Health Monitoring & Radio Frequency Sensors group for the use of their environmental chamber. The Pacific Northwest National Laboratory is operated for the US Department of Energy (DOE) by the Battelle Memorial Institute under Contract No. DE-AC05-76RL01830. Publisher Copyright: © 2015, Springer-Verlag Berlin Heidelberg.

PY - 2015/9/12

Y1 - 2015/9/12

N2 - We demonstrate a sensor based on tunable diode laser absorption spectroscopy for the detection of hydrogen fluoride (HF) gas at ambient pressure. Absorption from the HF R(1) ro-vibrational peak at ν̃ = 4038.962 cm−1 (2.476 µm) in the fundamental (Δν = 1) band is measured. A quantitative spectral fit based on HITRAN data is used to account for overlapping spectral peaks of HF and water vapor, with an rms residual noise of 5 × 10−4 absorbance units. The sensor is optimized for the detection of transient variations in HF concentration. We measure noise-equivalent concentrations for HF of 38 parts-per-trillion by volume (ppt) for 1-s integration times and 2.3 ppt for 10-min integration times.

AB - We demonstrate a sensor based on tunable diode laser absorption spectroscopy for the detection of hydrogen fluoride (HF) gas at ambient pressure. Absorption from the HF R(1) ro-vibrational peak at ν̃ = 4038.962 cm−1 (2.476 µm) in the fundamental (Δν = 1) band is measured. A quantitative spectral fit based on HITRAN data is used to account for overlapping spectral peaks of HF and water vapor, with an rms residual noise of 5 × 10−4 absorbance units. The sensor is optimized for the detection of transient variations in HF concentration. We measure noise-equivalent concentrations for HF of 38 parts-per-trillion by volume (ppt) for 1-s integration times and 2.3 ppt for 10-min integration times.

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JO - Applied Physics B: Lasers and Optics

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Sensing of gaseous HF at low part-per-trillion levels using a tunable 2.5-µm diode laser spectrometer operating at ambient pressure

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