High-efficiency double-pulsed CuBr laser
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: СuBr-лазер, средняя мощность излучения, режим сдвоенных импульсов накачки, импульс диссоциации, удельная энергия, КПД лазера, СuBr laser, average output power, double-pulsed excitation, dissociation pulse, energy density, laser efficiency
Subsection: OPTICAL SOURCES AND RECEIVERS FOR ENVIRONMENTAL STUDIES
Abstract
Results of research of the CuBr laser operating characteristics working in the double-pulse excitation mode with a pulse repetition rate of 50 Hz are given. The possibilities of increasing the efficiency by optimizing the parameters of the excitation pulse and matching with the impedance of the plasma formed by a dissociating pulse are considered. Laser efficiency of 2.56% at an excitation pulse with average power of 16 mW and time delay between dissociation and excitation pulses of 150 ms is received. Specific energy of the dissociating pulse reached 22 mJ/cm3; and of the exciting, 0.4 mJ/cm3. Introduction of saturation inductance into the excitation circuit provides for the maximum efficiency of 2.7%.
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