Influence of the Spectral Linewidths of a СО2 Laser on the Error in Measuring Gas Concentrations on the Example of Ammonia.

The influence of the parameters (laser linewidths and profiles) of the CO2 laser based on the main molecular isotope on the absorption coefficient of a gaseous compound is analyzed using ammonia as an example. Results of application of the CO2 laser for the determination of the gaseous ammonia content are considered and possible errors in calculating the gas concentration caused by the neglect of the specific spectral linewidth of the CO2 laser are analyzed. [ABSTRACT FROM AUTHOR]