Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy

I. Armstrong, W. Johnstone, K. Duffin, Michael Lengden, Arup Lal Chakraborty, Keith C. Ruxton

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper demonstrates detection of methane using tunable diode laser spectroscopy (TDLS) through difference frequency generation (DFG) in order to address fundamental rotational-vibrational absorption lines, located around 3404 nm. Direct detection confirms that wavelength referencing of recovered lineshapes, developed for Near infra-red (Near-IR) systems, has been successfully transferred to the presented Middle infra-red (Mid-IR) system. Traditional 1f and 2f TDLS with WMS detection regimes are also functionally confirmed analogous to their Near-IR equivalents.
Original languageEnglish
Pages (from-to)1435-1442
Number of pages8
JournalJournal of Lightwave Technology
Volume28
Issue number10
DOIs
Publication statusPublished - 15 May 2010

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laser spectroscopy
diodes
methane
wavelengths

Keywords

  • carbon compounds
  • chemical variables measurement
  • measurement by laser beam
  • optical harmonic generation

Cite this

Armstrong, I. ; Johnstone, W. ; Duffin, K. ; Lengden, Michael ; Chakraborty, Arup Lal ; Ruxton, Keith C. / Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy. In: Journal of Lightwave Technology. 2010 ; Vol. 28, No. 10. pp. 1435-1442.
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abstract = "This paper demonstrates detection of methane using tunable diode laser spectroscopy (TDLS) through difference frequency generation (DFG) in order to address fundamental rotational-vibrational absorption lines, located around 3404 nm. Direct detection confirms that wavelength referencing of recovered lineshapes, developed for Near infra-red (Near-IR) systems, has been successfully transferred to the presented Middle infra-red (Mid-IR) system. Traditional 1f and 2f TDLS with WMS detection regimes are also functionally confirmed analogous to their Near-IR equivalents.",
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Detection of CH4 in the mid-IR using difference frequency generation with tunable diode laser spectroscopy. / Armstrong, I.; Johnstone, W.; Duffin, K.; Lengden, Michael; Chakraborty, Arup Lal; Ruxton, Keith C.

In: Journal of Lightwave Technology, Vol. 28, No. 10, 15.05.2010, p. 1435-1442.

Research output: Contribution to journalArticle

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AU - Johnstone, W.

AU - Duffin, K.

AU - Lengden, Michael

AU - Chakraborty, Arup Lal

AU - Ruxton, Keith C.

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KW - chemical variables measurement

KW - measurement by laser beam

KW - optical harmonic generation

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