Selection of spectral lines in MOPA system of the pulsed chemical photo-initiated HF laser

Results of the experimental and numerical study of system "master oscillator-power amplifier" (MOPA) of the pulsed chemical photo-initiated HF-laser on chain reaction in a mode of selection of the separate spectral lines and groups of lines are presented. The MOPA radiation energy for the separate spectral lines and their groups at operation of the MO in a mode of selection achieved 350 and 500 J, respectively, that in 2 - 4 times exceeds the radiation energy for these lines at operation of MO in a free running mode.