Abstract
A promising method for laser monitoring of atmospheric pollutants is the method of differential absorption of radiation. It requires two lasers with wavelengths at which absorption in the studied medium differs considerably or a single laser emitting alternately at the corresponding frequencies. The emission spectrum of the CO laser consists of a large number of lines lying in the wavelength range 5-6.5 m, overlapping the absorption bands of gases such as NO, NO2, N2O4, C3H6, C4H6, and others, whose detection is of practical interest. For this reason, this paper is concerned with the development of a simple compact carbon monoxide laser operating in a mode with electrical switching of the lasing between neighboring vibrational-rotational transitions.
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