Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO2 at λ =2 μm

G. Wysocki; A. A. Kosterev; F. K. Tittel

doi:10.1007/s00340-006-2369-9

Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO₂ at λ =2 μm

G. Wysocki, A. A. Kosterev, F. K. Tittel

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

125 Scopus citations

Abstract

Carbon dioxide (CO₂) trace gas detection based on quartz enhanced photoacoustic spectroscopy (QEPAS) using a distributed feedback diode laser operating at λ=2 μm is performed, with a primary purpose of studying vibrational relaxation processes in the CO₂-N ₂-H₂O system. A simple model is developed and used to explain the experimentally observed dependence of amplitude and phase of the photoacoustic signal on pressure and gas humidity. A (1σ) sensitivity of 110 parts-per-million (with a 1 s lock-in time constant) was obtained for CO₂ concentrations measured in humid gas samples.

Original language	English (US)
Pages (from-to)	301-306
Number of pages	6
Journal	Applied Physics B: Lasers and Optics
Volume	85
Issue number	2-3
DOIs	https://doi.org/10.1007/s00340-006-2369-9
State	Published - Nov 2006
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

Access to Document

10.1007/s00340-006-2369-9

Cite this

@article{dcf2b52426f44f2aa0003bf765468fc6,

title = "Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO2 at λ =2 μm",

abstract = "Carbon dioxide (CO2) trace gas detection based on quartz enhanced photoacoustic spectroscopy (QEPAS) using a distributed feedback diode laser operating at λ=2 μm is performed, with a primary purpose of studying vibrational relaxation processes in the CO2-N 2-H2O system. A simple model is developed and used to explain the experimentally observed dependence of amplitude and phase of the photoacoustic signal on pressure and gas humidity. A (1σ) sensitivity of 110 parts-per-million (with a 1 s lock-in time constant) was obtained for CO2 concentrations measured in humid gas samples.",

author = "G. Wysocki and Kosterev, {A. A.} and Tittel, {F. K.}",

year = "2006",

month = nov,

doi = "10.1007/s00340-006-2369-9",

language = "English (US)",

volume = "85",

pages = "301--306",

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

issn = "0946-2171",

publisher = "Springer Verlag",

number = "2-3",

}

TY - JOUR

T1 - Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO2 at λ =2 μm

AU - Wysocki, G.

AU - Kosterev, A. A.

AU - Tittel, F. K.

PY - 2006/11

Y1 - 2006/11

N2 - Carbon dioxide (CO2) trace gas detection based on quartz enhanced photoacoustic spectroscopy (QEPAS) using a distributed feedback diode laser operating at λ=2 μm is performed, with a primary purpose of studying vibrational relaxation processes in the CO2-N 2-H2O system. A simple model is developed and used to explain the experimentally observed dependence of amplitude and phase of the photoacoustic signal on pressure and gas humidity. A (1σ) sensitivity of 110 parts-per-million (with a 1 s lock-in time constant) was obtained for CO2 concentrations measured in humid gas samples.

AB - Carbon dioxide (CO2) trace gas detection based on quartz enhanced photoacoustic spectroscopy (QEPAS) using a distributed feedback diode laser operating at λ=2 μm is performed, with a primary purpose of studying vibrational relaxation processes in the CO2-N 2-H2O system. A simple model is developed and used to explain the experimentally observed dependence of amplitude and phase of the photoacoustic signal on pressure and gas humidity. A (1σ) sensitivity of 110 parts-per-million (with a 1 s lock-in time constant) was obtained for CO2 concentrations measured in humid gas samples.

UR - http://www.scopus.com/inward/record.url?scp=33749025573&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749025573&partnerID=8YFLogxK

U2 - 10.1007/s00340-006-2369-9

DO - 10.1007/s00340-006-2369-9

M3 - Article

AN - SCOPUS:33749025573

SN - 0946-2171

VL - 85

SP - 301

EP - 306

JO - Applied Physics B: Lasers and Optics

JF - Applied Physics B: Lasers and Optics

IS - 2-3

ER -

Influence of molecular relaxation dynamics on quartz-enhanced photoacoustic detection of CO₂ at λ =2 μm

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this