We measured the isotopic ratio of 18O/16O in water using a cavity ring-down spectrometer operating near 1392 nm wavelength. Spectral scans took 5 seconds, and the per-scan ratio noise was 0.7 parts per thousand.
© 2006 Optical Society of America
(170.0170) Medical optics and biotechnology : Medical optics and biotechnology
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(300.0300) Spectroscopy : Spectroscopy
(300.6320) Spectroscopy : Spectroscopy, high-resolution
B. A. Richman, C. W. Rella, A. Kachanov, and S. Koulikov, "Determination of the 18O/16O Isotopic Ratio for Doubly Labeled Water by Using Cavity Ring-Down Spectroscopy," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper CThDD2.
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