Modeling and Selection of the Best Absorption Lines for the Detection of Carbon Monoxide at 2.35 Micron with Tunable Diode Lasers
At 2.35 m, a simulation of high-resolution absorption spectra of carbon monoxide (CO) and other interfering gases was performed. The study’s major goal was to determine the optimum CO absorption lines for spectral analysis of this molecule at 2.35 m in complicated gas mixtures like exhaled air with the best sensitivity, selectivity, and detection speed. Several CO absorption lines have been developed. The optimum method for laser-based spectrum analysis of CO in complicated gas mixtures under high humidity and high CO2 concentrations has been determined. The maximum sensitivity and selectivity of CO analysis in the near-infrared spectral range can be obtained by measuring resonance absorption in these lines.
E. V. Stepanov
A.M. Prokhorov General Physics Institute of Russian Academy of Science, Moscow, Russia.
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