Line intensity measurements of methane’s ν3-band using a cw-OPO

Jean-Jacques Zondy, Marco Polo Moreno de Souza, Malo Cadoret, Mohammad Jahjah, Linh Nguyen, Flavio C. Cruz

Research output: Contribution to journalArticle

Abstract

We report on absolute line strength measurements of P(1), R(0) and R(1) singlet lines in the 3:3 μm ν(C–H stretching) band of methane 12CH4 at referencetemperature T = 296 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
JournalApplied Physics B: Lasers and Optics
Volume117
DOIs
Publication statusPublished - 2014

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

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Line intensity measurements of methane’s ν3-band using a cw-OPO. / Zondy, Jean-Jacques; de Souza, Marco Polo Moreno; Cadoret, Malo; Jahjah, Mohammad; Nguyen, Linh; Cruz, Flavio C.

In: Applied Physics B: Lasers and Optics, Vol. 117, 2014, p. 681–687.

Research output: Contribution to journalArticle

Zondy, Jean-Jacques ; de Souza, Marco Polo Moreno ; Cadoret, Malo ; Jahjah, Mohammad ; Nguyen, Linh ; Cruz, Flavio C. / Line intensity measurements of methane’s ν3-band using a cw-OPO. In: Applied Physics B: Lasers and Optics. 2014 ; Vol. 117. pp. 681–687.
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AU - Cruz, Flavio C.

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