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Spectroscopic quantification of extremely rare molecular species in the presence of interfering optical absorption

United States Patent

May 9, 2017
View the Complete Patent at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
Optical spectrometer apparatus, systems, and methods for analysis of carbon-14 including a resonant optical cavity configured to accept a sample gas including carbon-14, an optical source configured to deliver optical radiation to the resonant optical cavity, an optical detector configured to detect optical radiation emitted from the resonant cavity and to provide a detector signal; and a processor configured to compute a carbon-14 concentration from the detector signal, wherein computing the carbon-14 concentration from the detector signal includes fitting a spectroscopic model to a measured spectrogram, wherein the spectroscopic model accounts for contributions from one or more interfering species that spectroscopically interfere with carbon-14.
Ognibene; Ted (Oakland, CA), Bench; Graham (Livermore, CA), McCartt; Alan Daniel (San Francisco, CA), Turteltaub; Kenneth (Livermore, CA), Rella; Chris W. (Sunnyvale, CA), Tan; Sze (Sunnyvale, CA), Hoffnagle; John A. (San Jose, CA), Saad; Nabil (Menlo Park, CA), Crosson; Eric (Livermore, CA)
Lawrence Livermore National Security, LLC (Livermore, CA), Picarro, Inc. (Santa Clara, CA)
14/ 714,658
May 18, 2015
STATEMENT AS TO RIGHTS TO APPLICATIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT The United States Government has rights in this application pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.