Vol. 28, issue 11, article # 11

Abstract:

A CuBr laser with a small active volume operating with a double-pulsed excitation and 50 Hz pulse repetition rate is studied. The possibilities of increasing efficiency of the laser by optimizing parameters of the excitation pulse and its agreement with the impedance of the plasma active medium formed by dissociating pulse is shown. It is shown that to improve the efficiency of the laser it is necessary to choose the optimal mode of energy input into the plasma. This is achieved by impedance matching of pump sources with the plasma, which was carried out by selection of the optimum voltage excitation pulse and the time delay with respect to the dissociating pulse. The maximum efficiency of 1.5% for the laser excitation pulse with time delay of 150 ms, and the specific energy of dissociating pulse of 26 mJ/cm³, and the exciting pulse of 0.2 mJ/cm³ is obtained.

Keywords:

CuBr laser, average output power, low frequency, double-pulsed excitation, dissociation and pumping pulse, energy density, laser efficiency

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