عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In an Oscillator-amplifier N2-laser system of the type TE-TE with the amplifier active effective length of 31 cm, both operating with corona-preionizer, the gain coefficient (g0) and saturation energy density (Es) measurements have been carried out for different gas pressures and gas purities. The details of our measurements are tabulated or presented graphically. The obtained values for the cases of used or cleaned electrodes are also presented for the comparison. At last, our g0 values along with those of our previously reported values for the active length of 94 cm and other reported values for the active lengths of 45 and 50 cm have been introduced for the comparison, and it was found that the measured values of g0 follow a characteristic curve showing their strong dependency on the length of laser channels. The present observation indicated that while the length of laser channel has the major contribution to the g0 values, the contributions of gas purities and cleaned electrodes are limited to at most 19.4% and 1.9%, respectively, at the gas pressure of 100 Torr.