The paper presents the description of the laser system designed for delivering high power short pulses of radiation at 1,064mm. The system involves the Nd: YAG master oscillator and a two-stage amplifier. The LiF crystal with F2- colour centers is used in the master oscillator as a Q switch. This laser system can deliver 1,1 J per pulse of 2 ns duration at a pulse repetition frequency to 10 Hz. Angular beam width is about 0,48 mrad.