The measurement of the line-width of CO$_2$ hybrid pulsed single-mode laser generation

The results of CO$_2$ hybrid laser generation line-width measurements are reported in the paper. The optic configuration of the laser system is described. The maximum and minimum of interferentional signal are determined. From respective equation system the coherency $\gamma=0.68$ and coherence length $L_{coh}=120±20~m$ have been determined and the possibility to obtain a generation of $10.6~\mu m$ in narrow line less than $10^{-4}cm^{-1}$ is shown.