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Off-resonant photoacoustic spectroscopy for analysis of multicomponent gas mixtures at high concentrations using broadband vibrational overtones of individual gas species
Published in OSA - The Optical Society
2019
PMID: 31158168
Volume: 58
   
Issue: 15
Pages: 4118 - 4126
Abstract
The broadband photoacoustic spectroscopy (PAS) technique is proposed and demonstrated for measurement of CH4, CO2, and H2O vapor in the 1.6 to 2.0 μm wavelength region. The wide spectrum of a supercontinuum light source is used to cover broadband absorption bands of multiple gas species. This sensor works in the off-resonant frequency of the designed photoacoustic cell and exhibits a wide concentration measurement range of parts per billion by volume (ppb-v) to 100%. The PAS sensor is further tested in real time by measuring the concentration of CO2, CH4, and H2O vapor in biogas plants. © 2019 Optical Society of America
About the journal
JournalData powered by TypesetApplied Optics
PublisherData powered by TypesetOSA - The Optical Society
ISSN1559128X
Impact Factor1.230
Open AccessNo
Citation Styleunsrt
Sherpa RoMEO Archiving PolicyGreen
Concepts (14)
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    Absorption spectroscopy
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    Carbon dioxide
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    Light sources
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    Natural frequencies
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    Photoacoustic effect
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    BROADBAND ABSORPTION
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    Concentration measurement
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    MULTICOMPONENT GAS-MIXTURES
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    Parts per billion
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    PHOTOACOUSTIC CELL
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    RESONANT PHOTOACOUSTIC SPECTROSCOPIES
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    SUPERCONTINUUM LIGHT SOURCE
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    WAVELENGTH REGIONS
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    PHOTOACOUSTIC SPECTROSCOPY