Development of a compact quantum cascade laser spectrometer for field measurements of CO2 isotopes

D. Weidmann, G. Wysocki, C. Oppenheimer, F. K. Tittel

Research output: Contribution to journalArticle

59 Scopus citations

Abstract

We report the development of a field-deployable, pulsed quantum cascade laser spectrometer. The instrument is designed to measure the 13C/12C isotopic ratio in the CO2 released from volcanic vents. Specific 12CO2 and 13CO 2 absorption lines were selected around 4.3 μm, where the P-branch of 12CO2 overlaps the R-branch of 13CO 2 of the 0001-0000 vibrational transition. This particular selection makes the instrument insensitive to temperature variations. A dual-channel cell balances the two absorption signals. We provide details of the instrument design and a preliminary demonstration of its performance based on laboratory measurements of 16O 12C 16O and 16O12C18O.

Original languageEnglish (US)
Pages (from-to)255-260
Number of pages6
JournalApplied Physics B: Lasers and Optics
Volume80
Issue number2
DOIs
StatePublished - Feb 1 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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