Abstract
A pair of copper bromide lasers in an oscillator–amplifier configuration was operated to measure and compare the small-signal gains and saturation intensities, as amplifying parameters of different laser tube lengths. The independencies of these amplifying parameters on the different amplifier tubes length with identical diameter were investigated, individually. Therefore, the output powers of the system were measured in different tubes lengths of amplifier and the optimum conditions were obtained. It was shown that, by changing the amplifier tube length, the amplifying parameters remain nearly constant without any remarkably changing, but the output power of the system was increased linearly due to increase of tube length. The experimental results were in good agreement with the theory. Moreover, the radial gain distribution was studied.
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