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 journalArticlepeer-review

3 Citations (Scopus)


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
Issue number2
Publication statusPublished - 2014

ASJC Scopus subject areas

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

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