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Applications of quantum cascade lasers for sensitive trace gas measurements of CO, CH4 and HHO

Applications of quantum cascade lasers for sensitive trace gas measurements of CO, CH4 and HHO

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Title: Applications of quantum cascade lasers for sensitive trace gas measurements of CO, CH4 and HHO
Author: Schiller, C.L.
Bozem, H.
Gurk, C.
Parchatka, U.
Königstedt, R.
Harris, G.W.
Fischer, H.
Abstract: We describe here a sensitive quantum cascade laser absorption spectrometer (QCLAS) employed for aircraft based measurements during the GABRIEL 2005 and HOOVER 2006 and 2007 campaigns. This 3-channel instrument measures CO, HCHO, CH4 and N2O using a 64-m path double corner cube White cell. Performance of the instrument was examined for the four species and precisions for CO, N2O and CH4 were measured in the field to be 0.5, 0.5 and 0.7% respectively (2σ). The 1σ detection limit for HCHO was ∼500 pptv for a 2 s average, while signal averaging of the HCHO over a 2 min time interval resulted in a 150 pptv detection limit with a duty cycle of 60%.
Type: Article
Rights: The original publication is available at www.springerlink.com
http://www.springerlink.com/content/297311l27g00nlg2/fulltext.pdf
http://www.springerlink.com/content/100502/
URI: http://hdl.handle.net/10315/4209
Published: Springer Verlag
Citation: Applied Physics B., 92, 419-430
Date: 2008

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