Abstract The experimental results in studying lasing and pumping parameters of the CuBr laser with attypical excitation mode are presented in the paper. The excitation was provided by the single pulse mode with preliminary preparation of the active medium by pulse sequence (zug). The effect of the time delay between pulse sequence and single excitation pulse on the CuBr + Ne and CuBr + Ne + HBr media lasing was determined. It has been established that an increase in this time delay leads to an increase in the duration of the generation pulse. It was shown for the first time that lasing in a CuBr + Ne + HBr laser can be obtained with a relaxation time of the active medium up to 5 ms. The critical electron concentration which provides ability of generation for CuBr + Ne and CuBr + Ne + HBr media was experimentally shown.
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