Title :
Determination of the 18O/16O isotopic ratio for doubly labeled water by using cavity ring-down spectroscopy
Author :
Richman, Bruce A. ; Rella, Chris W. ; Kachanov, Alexander ; Koulikov, Serguei
Author_Institution :
Picarro, Inc., Sunnyvale, CA
Abstract :
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.
Keywords :
infrared spectroscopy; laser applications in medicine; cavity ring-down spectroscopy; doubly labeled water; isotopic ratio; spectral scans; Biomedical optical imaging; Humidity; Hydrogen; Infrared spectra; Instruments; Isotopes; Optical noise; Spectroscopy; Valves; Wavelength measurement; (170.4580) Optical diagnostics for medicine; (300.6320) Spectroscopy, high-resolution; (300.6340) Spectroscopy, infrared;
Conference_Titel :
Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-55752-813-1
Electronic_ISBN :
978-1-55752-813-1
DOI :
10.1109/CLEO.2006.4627966
