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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 15 — May. 20, 1997
  • pp: 3288–3293

Diode laser absorption measurements of CH3Cl and CH4 near 1.65 µm

Shang-I Chou, Douglas S. Baer, and Ronald K. Hanson  »View Author Affiliations


Applied Optics, Vol. 36, Issue 15, pp. 3288-3293 (1997)
http://dx.doi.org/10.1364/AO.36.003288


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Abstract

Two distributed-feedback (InGaAsP) diode lasers were used to record high-resolution absorption spectra of the parallel and the perpendicular components of the 2ν4 band of methyl chloride (CH3Cl) and the 2ν3 band of methane (CH4) near 1.65 μm. The room-temperature absorption measurements, which were conducted in a multipass cell with a variable path length (878–1020 cm), were used to determine the mole fractions of the constituent gases and thus demonstrate species-specific, nonintrusive concentration measurements of species with overlapping spectra.

© 1997 Optical Society of America

Citation
Shang-I Chou, Douglas S. Baer, and Ronald K. Hanson, "Diode laser absorption measurements of CH3Cl and CH4 near 1.65 µm," Appl. Opt. 36, 3288-3293 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-15-3288


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