Emission spectrum of a CO2 laser with an intracavity diffraction selector

Selection of a single laser line was considered for CO₂ lasers with nonselective resonators and with resonators which include a diffraction selector. A method was developed for calculating numerically the lasing spectrum of CO₂ lasers having selective resonators: this method enables the spectra to be analyzed over a wide range of operating conditions. The results of experiments performed were in good agreement with the calculations.