High sensitivity trace gas detection by cantilever-enhanced photoacoustic spectroscopy using a mid-infrared continuous-wave optical parametric oscillator

Jari Peltola, Markku Vainio, Tuomas Hieta, Juho Uotila, Sauli Sinisalo, Markus Metsälä, Mikael Siltanen, Lauri Halonen

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

Highly sensitive cantilever-enhanced photoacoustic detection of hydrogen cyanide and methane in the mid-infrared region is demonstrated. A mid-infrared continuous-wave frequency tunable optical parametric oscillator was used as a light source in the experimental setup. Noise equivalent detection limits of 190 ppt (1 s) and 65 ppt (30 s) were achieved for HCN and CH4, respectively. The normalized noise equivalent absorption coefficient is 1.8 × 10−9 W cm−1 Hz−1/2.
Original languageEnglish
Pages (from-to)10240-10250
Number of pages10
JournalOptics Express
Volume21
Issue number8
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

photoacoustic spectroscopy
parametric amplifiers
continuous radiation
hydrocyanic acid
sensitivity
gases
absorptivity
light sources
methane

Keywords

  • spectroscopy
  • photothermal
  • parametric oscillators
  • laser sensors

Cite this

Peltola, Jari ; Vainio, Markku ; Hieta, Tuomas ; Uotila, Juho ; Sinisalo, Sauli ; Metsälä, Markus ; Siltanen, Mikael ; Halonen, Lauri. / High sensitivity trace gas detection by cantilever-enhanced photoacoustic spectroscopy using a mid-infrared continuous-wave optical parametric oscillator. In: Optics Express. 2013 ; Vol. 21, No. 8. pp. 10240-10250.
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abstract = "Highly sensitive cantilever-enhanced photoacoustic detection of hydrogen cyanide and methane in the mid-infrared region is demonstrated. A mid-infrared continuous-wave frequency tunable optical parametric oscillator was used as a light source in the experimental setup. Noise equivalent detection limits of 190 ppt (1 s) and 65 ppt (30 s) were achieved for HCN and CH4, respectively. The normalized noise equivalent absorption coefficient is 1.8 × 10−9 W cm−1 Hz−1/2.",
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High sensitivity trace gas detection by cantilever-enhanced photoacoustic spectroscopy using a mid-infrared continuous-wave optical parametric oscillator. / Peltola, Jari; Vainio, Markku; Hieta, Tuomas; Uotila, Juho; Sinisalo, Sauli; Metsälä, Markus; Siltanen, Mikael; Halonen, Lauri.

In: Optics Express, Vol. 21, No. 8, 2013, p. 10240-10250.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - High sensitivity trace gas detection by cantilever-enhanced photoacoustic spectroscopy using a mid-infrared continuous-wave optical parametric oscillator

AU - Peltola, Jari

AU - Vainio, Markku

AU - Hieta, Tuomas

AU - Uotila, Juho

AU - Sinisalo, Sauli

AU - Metsälä, Markus

AU - Siltanen, Mikael

AU - Halonen, Lauri

PY - 2013

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AB - Highly sensitive cantilever-enhanced photoacoustic detection of hydrogen cyanide and methane in the mid-infrared region is demonstrated. A mid-infrared continuous-wave frequency tunable optical parametric oscillator was used as a light source in the experimental setup. Noise equivalent detection limits of 190 ppt (1 s) and 65 ppt (30 s) were achieved for HCN and CH4, respectively. The normalized noise equivalent absorption coefficient is 1.8 × 10−9 W cm−1 Hz−1/2.

KW - spectroscopy

KW - photothermal

KW - parametric oscillators

KW - laser sensors

U2 - 10.1364/OE.21.010240

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