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22 September 2003 Detection capabilities of different molecular lasers in infrared spectroscopic diagnostics of multicomponent gas mixtures
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Proceedings Volume 5149, Laser Applications in Medicine, Biology, and Environmental Science; (2003) https://doi.org/10.1117/12.519657
Event: International Conference on Lasers, Applications, and Technologies 2002, 2002, Moscow, Russian Federation
Abstract
The capabilities of different molecular gas lasers in infrared absorption diagnostics of multicomponent mixture are evaluated and compared. Extended sets of vibration-rotational emission lines are used for the following lasers: CO2, HF, DF, NH3, N2O and CO (including fundamental and first overtone transitions). Analytical frequencies are selected for all indicated lasers using spectroscopic databases in order to detect organic and inorganic pollutants using either low- or high-resolution spectra. Comparison of absorption in the atmosphere is made for frequencies of different lasers. Absorption spectra are simulated for 38 component gas mixture. Quantitative parameters characterizing the sensitivity and the selectivity of specific gas detection are calculated and compared: minimum detectable concentration, partial sensitivity, partial selectivity. It is found that NH3 and CO lasers presently have the best spectroscopic detection characteristics.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sergey V. Ivanov, Andrei A. Ionin, Andrei A. Kotkov, A. Yu. Kozlov, Leonid V. Seleznev, and O. G. Buzykin "Detection capabilities of different molecular lasers in infrared spectroscopic diagnostics of multicomponent gas mixtures", Proc. SPIE 5149, Laser Applications in Medicine, Biology, and Environmental Science, (22 September 2003); https://doi.org/10.1117/12.519657
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