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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 11, Iss. 13 — Jun. 30, 2003
  • pp: 1566–1576

Isotope analysis of water by means of near-infrared dual-wavelength diode laser spectroscopy

L. Gianfrani , G. Gagliardi , M. van Burgel, and E. R. Th. Kerstel  »View Author Affiliations

Optics Express, Vol. 11, Issue 13, pp. 1566-1576 (2003)

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A novel diode laser spectrometer was developed using dual-wavelength multiplexing, ensuring ideal conditions for high-precision and simultaneous measurements of the 2H/1H, 17O/16O, and 18O/16O isotope ratios in water. A 1.4-µm diode laser probed a H16OH / HO2H line pair near 7198 cm-1, while a similar laser observed H16OH, H17OH, and H18OH ro-vibrational lines around 7183 cm-1, or a H16OH / H18OH line pair near 7200 cm-1. The 1-σ standard deviation is 0.2‰ for 18O/16O, and 0.5‰ for the 2H/1H and 17O/16O isotope ratios. Preliminary experiments with repeated injections of a natural abundance sample point to an accuracy of about 1‰ for all three isotope ratios in natural samples.

© 2003 Optical Society of America

OCIS Codes
(300.1030) Spectroscopy : Absorption
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Research Papers

Original Manuscript: May 7, 2003
Revised Manuscript: June 4, 2003
Published: June 30, 2003

L. Gianfrani, G. Gagliardi, M. van Burgel, and Erik Kerstel, "Isotope analysis of water by means of near infrared dual-wavelength diode laser spectroscopy," Opt. Express 11, 1566-1576 (2003)

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  16. R. A. Toth: private communication (2000).

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