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Atmospheric and Oceanic Optics

2015 year, number 9

Low-freguency CuBr laser

A.I. Fedorov, D.V. Shiyanov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: CuBr-лазер, режим сдвоенных импульсов накачки, энергия излучения, удельная энергия диссоциирующего и возбуждающего импульсов накачки, CuBr laser, double pulsed mode, output energy, dissociation and excitation energy density

Abstract

Investigation and optimization of radiation parameters of the double-pulsed CuBr laser with a small active volume with repetition rate of 5 to 100 Hz were made. The possibility of increasing the average output power of CuBr laser by optimizing the specific energy of the dissociation and excitation pulses and their time delay between them is shown. Maximum average output power were received at a pulse repetition frequency 100 Hz and delay time 125 ms. However, high energy radiation are achieved at low frequencies. The laser energy was 0.42 mJ with a pulse duration of 30 ns FWHM when dissociating and exciting energy density was 12 and 6 mJ/cm 3, respectively.