Abstract
Differential absorption lidar (DIAL) measurements are usually made on single compounds by alternately switching the wavelength between on and off a resonance line. The selection of more than two wavelengths is a mathematical necessity for simultaneous measurement of multiple species or for resolving interference effects between a compound of interest and a background gas such as water vapour or carbon dioxide. This is especially true in the mid-IR region, where many hydrocarbon compounds have important spectral features. We present a method for remote measurement of gas mixtures in the mid-IR region based on a newly developed fast-switching, frequency-agile optical parametric oscillator lidar transmitter. A multivariate statistical procedure has also been applied for this system, which combines a genetic algorithm for wavelength selection with a partial least squares method for identifying individual compounds from their combined absorption spectrum. A calibration transfer is performed for compounds of interest using reference spectra from an absorption spectra database. Both indoor absorption cell measurements and outdoor remote range resolved measurements of hydrocarbon mixtures were performed to explore the performance of the method.
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J.H. Seinfeld, S.N. Pandi: Atmospheric Chemistry and Physics (John Wiley & Sons, New York 1988)
M.W. Sigrist: Air monitoring by spectroscopic techniques, In: Chemical Analysis, vol. 127 (John Wiley & Sons, New York 1994)
J. Kasparian, M. Rodriguez, G. Méjean, J. Yu, E. Salmon, H. Wille, R. Bourayou, S. Frey, Y.-B. André, A. Mysyrowicz, R. Sauerbrey, J.-P. Wolf , L. Wöste: Science 301, 61 (2003)
R.A. Robinson, P.T. Woods, M.J.T. Milton: SPIE 2506, 140 (1995)
J.R. Quagliano, P.O. Stoutland, R.R. Petrin, R.K. Sander, R.J. Romero, M.C. Whitehead, C.R. Quick, J.J. Tiee, L.J. Jolin: SPIE 2702, 16 (1996)
P. Weibring, J. Smith, H. Edner, S. Svanberg: Rev. Sci. Instrum. 74, 4478 (2003)
P. Geladi, B.R. Kowalski: Anal. Chim. Acta 185, 1 (1986)
S.J. Haswell, A.D. Walmsley: Anal. Chim. Acta 400, 399 (1999)
R. Leardi, R. Boggia, M. Terrile: J. Chemom. 6, 267 (1992)
A.S. Bangalore, R.E. Shaffer, G.W. Small, M.A. Arnold: Anal. Chem. 68, 4200 (1996)
L. Davies: Handbook of Genetic Algorithms (Van Nostrand Reinhold, New York 1991)
P. Weibring, H. Edner, S. Svanberg: Appl. Opt. 42, 1 (2003)
T. Fujii, T. Fukuchi, N. Goto, K. Nemoto, N. Takeuchi: App. Opt. 40, 949 (2001)
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42.62 Fi; 42.79 Qx; 02.50 Sk
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Weibring, P., Abrahamsson, C., Sjöholm, M. et al. Multi-component chemical analysis of gas mixtures using a continuously tuneable lidar system. Appl. Phys. B 79, 525–530 (2004). https://doi.org/10.1007/s00340-004-1565-8
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DOI: https://doi.org/10.1007/s00340-004-1565-8