External cavity diode laser based photoacoustic detection of CO2 at 1.43 μm:: The effect of molecular relaxation

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • A Veres
  • Z Bozóki
  • A Mohácsi
  • M Szakáll
  • G Szabó
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000184655800002&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1366/000370203322258841
Externe Identifier
  • Clarivate Analytics Document Solution ID: 709ZE
  • PubMed Identifier: 14661831
ISSN
0003-7028
Ausgabe der Veröffentlichung
8
Zeitschrift
APPLIED SPECTROSCOPY
Schlüsselwörter
  • photoacoustic spectroscopy
  • gas detection
  • diode lasers
  • molecular relaxation
Paginierung
900 - 905
Datum der Veröffentlichung
2003
Status
Published
Titel
External cavity diode laser based photoacoustic detection of CO<sub>2</sub> at 1.43 μm:: The effect of molecular relaxation
Sub types
  • Article
Ausgabe der Zeitschrift
57

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:p> Photoacoustic spectroscopy, based on an external cavity diode laser operating at 1431 nm, was used for measuring CO<jats:sub>2</jats:sub> concentration as a minority component in a gas mixture. By using N<jats:sub>2</jats:sub> as a buffer gas, a molecular relaxation effect was observed, which influenced both the amplitude and the phase of the measured photoacoustic signal and consequently reduced the sensitivity of the PA system. This molecular relaxation effect could be suppressed by adding water vapor of a constant and relatively high (∼4%) concentration to the gas sample. In parallel with this, the arising spectral interference between H<jats:sub>2</jats:sub>O and CO<jats:sub>2</jats:sub> necessitated the development of a simple yet efficient signal analysis method, which increased the sensitivity of the system by more than one order of magnitude and accordingly reduced the minimum detectable CO<jats:sub>2</jats:sub> concentration down to ∼1000 ppm. </jats:p>
Autoren
  • Anikó Veres
  • Zoltán Bozóki
  • Árpád Mohácsi
  • Miklós Szakáll
  • Gábor Szabó
DOI
10.1366/000370203322258841
eISSN
1943-3530
ISSN
0003-7028
Ausgabe der Veröffentlichung
8
Zeitschrift
Applied Spectroscopy
Sprache
en
Online publication date
2016
Paginierung
900 - 905
Datum der Veröffentlichung
2003
Status
Published
Herausgeber
SAGE Publications
Herausgeber URL
http://dx.doi.org/10.1366/000370203322258841
Datum der Datenerfassung
2020
Titel
External Cavity Diode Laser Based Photoacoustic Detection of CO<sub>2</sub> at 1.43 μm: The Effect of Molecular Relaxation
Ausgabe der Zeitschrift
57

Datenquelle: Crossref

Abstract
Photoacoustic spectroscopy, based on an external cavity diode laser operating at 1431 nm, was used for measuring CO2 concentration as a minority component in a gas mixture. By using N2 as a buffer gas, a molecular relaxation effect was observed, which influenced both the amplitude and the phase of the measured photoacoustic signal and consequently reduced the sensitivity of the PA system. This molecular relaxation effect could be suppressed by adding water vapor of a constant and relatively high (approximately 4%) concentration to the gas sample. In parallel with this, the arising spectral interference between H2O and CO2 necessitated the development of a simple yet efficient signal analysis method, which increased the sensitivity of the system by more than one order of magnitude and accordingly reduced the minimum detectable CO2 concentration down to approximately 1000 ppm.
Addresses
  • Department of Optics and Quantum Electronics, University of Szeged, H-6701 Pf 406 Szeged, Hungary.
Autoren
  • Anikó Veres
  • Zoltán Bozóki
  • Arpád Mohácsi
  • Miklós Szakáll
  • Gábor Szabó
DOI
10.1366/000370203322258841
eISSN
1943-3530
Externe Identifier
  • PubMed Identifier: 14661831
Open access
false
ISSN
0003-7028
Ausgabe der Veröffentlichung
8
Zeitschrift
Applied spectroscopy
Schlüsselwörter
  • Carbon Dioxide
  • Spectroscopy, Near-Infrared
  • Sensitivity and Specificity
  • Lasers
  • Acoustics
  • Thermodynamics
Sprache
eng
Medium
Print
Paginierung
900 - 905
Datum der Veröffentlichung
2003
Status
Published
Datum der Datenerfassung
2003
Titel
External cavity diode laser based photoacoustic detection of CO2 at 1.43 microm: the effect of molecular relaxation.
Sub types
  • Research Support, Non-U.S. Gov't
  • Journal Article
Ausgabe der Zeitschrift
57

Datenquelle: Europe PubMed Central

Abstract
Photoacoustic spectroscopy, based on an external cavity diode laser operating at 1431 nm, was used for measuring CO2 concentration as a minority component in a gas mixture. By using N2 as a buffer gas, a molecular relaxation effect was observed, which influenced both the amplitude and the phase of the measured photoacoustic signal and consequently reduced the sensitivity of the PA system. This molecular relaxation effect could be suppressed by adding water vapor of a constant and relatively high (approximately 4%) concentration to the gas sample. In parallel with this, the arising spectral interference between H2O and CO2 necessitated the development of a simple yet efficient signal analysis method, which increased the sensitivity of the system by more than one order of magnitude and accordingly reduced the minimum detectable CO2 concentration down to approximately 1000 ppm.
Autoren
  • Anikó Veres
  • Zoltán Bozóki
  • Arpád Mohácsi
  • Miklós Szakáll
  • Gábor Szabó
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/14661831
DOI
10.1366/000370203322258841
ISSN
0003-7028
Ausgabe der Veröffentlichung
8
Zeitschrift
Appl Spectrosc
Schlüsselwörter
  • Acoustics
  • Carbon Dioxide
  • Lasers
  • Sensitivity and Specificity
  • Spectroscopy, Near-Infrared
  • Thermodynamics
Sprache
eng
Country
United States
Paginierung
900 - 905
Datum der Veröffentlichung
2003
Status
Published
Datum, an dem der Datensatz öffentlich gemacht wurde
2004
Titel
External cavity diode laser based photoacoustic detection of CO2 at 1.43 microm: the effect of molecular relaxation.
Sub types
  • Journal Article
  • Research Support, Non-U.S. Gov't
Ausgabe der Zeitschrift
57

Datenquelle: PubMed

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