Abstract
A flat-plate Blumlein circuit has been used for operating a low pressure longitudinally excited oscillator–amplifier N 2-laser at 14 kV input voltage (LE–LE type). For investigating the effect of the excitation length on the laser performances, various amplifiers made of glass tubes of different lengths ranging from 15.5 to 35 cm with 4 mm inner bore diameters have been used. The measurements have been carried out for the laser parameters: small signal gain, and saturation energy density; and the laser beam divergence. Details of our measurements are presented. The results of our measurements have also been compared with the reported values of laser parameters in TE–TEA and LE N 2-laser configurations.
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