Peculiarities of the obtaining of high efficiency of a CuBr laser with double-pulsed excitation
A.I. Fedorov1, D.V. Shiyanov1,2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
2National Research Tomsk Polytechnic University, 30, Lenin Avenue, Tomsk, 634050, Russia
Keywords: CuBr-laser, средняя мощность излучения, низкая частота, режим сдвоенных импульсов накачки, импульсы диссоциации и накачки, удельная энергия, кпд лазера, CuBr laser, average output power, low frequency, double-pulsed excitation, dissociation and pumping pulse, energy density, laser efficiency
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/cm
3, and the exciting pulse of 0.2 mJ/cm
3 is obtained.
|
