High-precision CO₂ isotopologue spectrometer with a difference-frequency-generation laser source

A precision laser spectrometer for the detection of CO₂ isotopes is reported. The spectrometer measures the fundamental absorption signatures of ¹³C and ¹²C isotopes in CO₂ at 4.32 μm using a tunable mid-IR laser source based on difference-frequency generation. The spectrometer attains a precision of up to 0.02‰ for 150 s of averaging. An overall accuracy of 0.05‰ was obtained when sampling various calibrated reference gases.

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Copyright 2009 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-2-172. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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Author Richter, Dirk
Wert, Bryan
Fried, Alan
Weibring, Peter
Walega, James
White, James
Vaughn, Bruce
Tittel, Frank
Publisher UCAR/NCAR - Library
Publication Date 2009-01-15T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:57:40.335714
Metadata Record Identifier edu.ucar.opensky::articles:15503
Metadata Language eng; USA
Suggested Citation Richter, Dirk, Wert, Bryan, Fried, Alan, Weibring, Peter, Walega, James, White, James, Vaughn, Bruce, Tittel, Frank. (2009). High-precision CO₂ isotopologue spectrometer with a difference-frequency-generation laser source. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7dn463r. Accessed 21 June 2025.

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