Line intensity measurements of methane’s v3-band using a cw-OPO

Marco P. Moreno, Malo Cadoret, Mohammad Jahjah, Linh Nguyen, Flavio C. Cruz, Jean Jacques Zondy

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We report on absolute line strength measurements of P(1), R(0) and R(1) singlet lines in the 3.3μm ν3 (C–H stretching) band of methane 12CH4 at reference temperature T = K. Line strength measurements are performed at low pressure P ≤1 Torr) using direct absorption spectroscopy technique based on a widely tunable continuous-wave singly resonant optical parametric oscillator. The 1σ overall accuracy in line strength determinations ranges between 7 and 8 % mostly limited by pressure and frequency measurements. A comparison with previous reported values is made. Our results show good agreement with the HITRAN 2012 database.

Original languageEnglish
Pages (from-to)681-687
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume117
Issue number2
DOIs
Publication statusPublished - 2014
Externally publishedYes

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methane
K lines
frequency measurement
pressure measurement
parametric amplifiers
continuous radiation
absorption spectroscopy
low pressure
methylidyne
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physics and Astronomy (miscellaneous)

Cite this

Line intensity measurements of methane’s v3-band using a cw-OPO. / Moreno, Marco P.; Cadoret, Malo; Jahjah, Mohammad; Nguyen, Linh; Cruz, Flavio C.; Zondy, Jean Jacques.

In: Applied Physics B: Lasers and Optics, Vol. 117, No. 2, 2014, p. 681-687.

Research output: Contribution to journalArticle

Moreno, Marco P. ; Cadoret, Malo ; Jahjah, Mohammad ; Nguyen, Linh ; Cruz, Flavio C. ; Zondy, Jean Jacques. / Line intensity measurements of methane’s v3-band using a cw-OPO. In: Applied Physics B: Lasers and Optics. 2014 ; Vol. 117, No. 2. pp. 681-687.
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