Abstract

By the use of an oscillator-amplifier (OSC-AMP) TE N2 laser system, both operating with corona preionizers, the laser parameters (small-signal gain g 0 and saturation energy density E s) have been measured at different N2 gas pressure and for different states of the AMP preionizer. The details of our measurements are presented. In addition, the effect of He buffer gas on the laser parameters has also been investigated; it was found that both laser parameters remain almost constant up to 150 Torr of He gas pressure, indicating that He mainly affects the discharge uniformity. Finally, with the variation of the N2 laser gain values in the literature, we found that the g 0-N2-laser parameter depends strongly on the length of the laser channel. Based on the most recent measurements, a graph showing this dependency is introduced.

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