Sensitive detection of methane and nitrous oxide isotopomers using a continuous wave quantum cascade laser

G. Gagliardi; F. Tamassia; P. De Natale; C. Gmachl; F. Capasso; D. L. Sivco; J. N. Baillargeon; A. L. Hutchinson; A. Y. Cho

doi:10.1140/epjd/e20020091

Sensitive detection of methane and nitrous oxide isotopomers using a continuous wave quantum cascade laser

G. Gagliardi, F. Tamassia, P. De Natale, C. Gmachl, F. Capasso, D. L. Sivco, J. N. Baillargeon, A. L. Hutchinson, A. Y. Cho

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

A continuous wave quantum cascade laser (QCL), operating near 8.1 μm, was used for wavelength modulation spectroscopy of methane (CH₄) and nitrous oxide (N₂O) stable isotopes. Several rotational transitions of ¹⁴N₂¹⁶O, ¹⁵N¹⁴N¹⁶O, ¹⁴N₂¹⁸O, ¹⁴N₂¹⁷O, ¹³CH₄ and ¹²CH₄ fundamental bands were detected. The noise-equivalent absorbance was measured to be less than 10^-5 in a 1-Hz bandwidth. A characterization of the laser source was also performed. The use of a QCL spectrometer for high-precision isotope ratio measurements is discussed.

Original language	English (US)
Pages (from-to)	327-331
Number of pages	5
Journal	European Physical Journal D
Volume	19
Issue number	3
DOIs	https://doi.org/10.1140/epjd/e20020091
State	Published - Jun 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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title = "Sensitive detection of methane and nitrous oxide isotopomers using a continuous wave quantum cascade laser",

abstract = "A continuous wave quantum cascade laser (QCL), operating near 8.1 μm, was used for wavelength modulation spectroscopy of methane (CH4) and nitrous oxide (N2O) stable isotopes. Several rotational transitions of 14N216O, 15N14N16O, 14N218O, 14N217O, 13CH4 and 12CH4 fundamental bands were detected. The noise-equivalent absorbance was measured to be less than 10-5 in a 1-Hz bandwidth. A characterization of the laser source was also performed. The use of a QCL spectrometer for high-precision isotope ratio measurements is discussed.",

author = "G. Gagliardi and F. Tamassia and {De Natale}, P. and C. Gmachl and F. Capasso and Sivco, {D. L.} and Baillargeon, {J. N.} and Hutchinson, {A. L.} and Cho, {A. Y.}",

year = "2002",

month = jun,

doi = "10.1140/epjd/e20020091",

language = "English (US)",

volume = "19",

pages = "327--331",

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T1 - Sensitive detection of methane and nitrous oxide isotopomers using a continuous wave quantum cascade laser

AU - Gagliardi, G.

AU - Tamassia, F.

AU - De Natale, P.

AU - Gmachl, C.

AU - Capasso, F.

AU - Sivco, D. L.

AU - Baillargeon, J. N.

AU - Hutchinson, A. L.

AU - Cho, A. Y.

PY - 2002/6

Y1 - 2002/6

N2 - A continuous wave quantum cascade laser (QCL), operating near 8.1 μm, was used for wavelength modulation spectroscopy of methane (CH4) and nitrous oxide (N2O) stable isotopes. Several rotational transitions of 14N216O, 15N14N16O, 14N218O, 14N217O, 13CH4 and 12CH4 fundamental bands were detected. The noise-equivalent absorbance was measured to be less than 10-5 in a 1-Hz bandwidth. A characterization of the laser source was also performed. The use of a QCL spectrometer for high-precision isotope ratio measurements is discussed.

AB - A continuous wave quantum cascade laser (QCL), operating near 8.1 μm, was used for wavelength modulation spectroscopy of methane (CH4) and nitrous oxide (N2O) stable isotopes. Several rotational transitions of 14N216O, 15N14N16O, 14N218O, 14N217O, 13CH4 and 12CH4 fundamental bands were detected. The noise-equivalent absorbance was measured to be less than 10-5 in a 1-Hz bandwidth. A characterization of the laser source was also performed. The use of a QCL spectrometer for high-precision isotope ratio measurements is discussed.

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JO - European Physical Journal D

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Sensitive detection of methane and nitrous oxide isotopomers using a continuous wave quantum cascade laser

Abstract

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