Measurements of N2-broadening and pressure-shift coefficients in the ν3-band of 12CH4 using a cw-OPO

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

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have measured the nitrogen-collision-induced line broadening and line shift coefficients of three singlet lines - P(1), R(0) and R(1) - belonging to the ν3 band of methane (12CH4) at 3.29-3.32μm using direct laser absorption spectroscopy by means of a continuous-wave mid-IR optical parametric oscillator. Owing to the well-isolated features of the singlet lines, the lineshapes were modeled with a simple Voigt profile in order to retrieve the line parameter coefficients. The values of the N2-broadening and pressure-shift coefficients agree fairly well with the previously published ones that use either Fourier-transform or mid-infrared difference-frequency spectrometers along with more complex analytic spectroscopic models.

Original languageEnglish
Pages (from-to)251-259
Number of pages9
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume151
DOIs
Publication statusPublished - Jan 1 2015
Externally publishedYes

Fingerprint

Optical parametric oscillators
Laser spectroscopy
Methane
Absorption spectroscopy
Spectrometers
Fourier transforms
Nitrogen
Infrared radiation
shift
coefficients
parametric amplifiers
laser spectroscopy
continuous radiation
absorption spectroscopy
methane
spectrometers
nitrogen
collisions
profiles

Keywords

  • Laser spectroscopy
  • Line parameters
  • Methane
  • Optical parametric oscillator

ASJC Scopus subject areas

  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Radiation

Cite this

Measurements of N2-broadening and pressure-shift coefficients in the ν3-band of 12CH4 using a cw-OPO. / Jahjah, Mohammad; Nguyen, Linh; Moreno, Marco P.; Cadoret, Malo; Zondy, Jean Jacques.

In: Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 151, 01.01.2015, p. 251-259.

Research output: Contribution to journalArticle

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AU - Nguyen, Linh

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AU - Cadoret, Malo

AU - Zondy, Jean Jacques

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