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Articles
Off-resonant photoacoustic spectroscopy for analysis of multicomponent gas mixtures at high concentrations using broadband vibrational overtones of individual gas speciesPublished in OSA - The Optical Society
2019
DOI: 10.1364/AO.58.004118
PMID: 31158168
Volume: 58
Issue: 15
Pages: 4118 - 4126
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
Topics: Photoacoustic effect (65)%65% related to the paper, Photoacoustic spectroscopy (62)%62% related to the paper, Absorption spectroscopy (52)%52% related to the paper and Supercontinuum (51)%51% related to the paper
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About the journal
| Journal | Data powered by TypesetApplied Optics |
|---|---|
| Publisher | Data powered by TypesetOSA - The Optical Society |
| ISSN | 1559128X |
| Impact Factor | 1.230 |
| Open Access | No |
| Citation Style | unsrt |
| Sherpa RoMEO Archiving Policy | Green |
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Concepts (14)
Absorption spectroscopy- Carbon dioxide
- Light sources
- Natural frequencies
- Photoacoustic effect
- BROADBAND ABSORPTION
- Concentration measurement
- MULTICOMPONENT GAS-MIXTURES
- Parts per billion
- PHOTOACOUSTIC CELL
- RESONANT PHOTOACOUSTIC SPECTROSCOPIES
- SUPERCONTINUUM LIGHT SOURCE
- WAVELENGTH REGIONS
- PHOTOACOUSTIC SPECTROSCOPY
