Laser amplifier based on a photon-branched chain reaction in an aerosol-evaporation reactor cavity

A new design is proposed and the characteristics are calculated of a pulsed chemical HF laser with a two-phase active medium and a photon-branched cha in initiation mechanism. This laser includes an aerosol-evaporation reactor coupled structurally to an unstable telescopic cavity. Such a closed syste m reduces considerably (down to 0.217 ms) the time needed for the formation of a two-phase active medium with the required properties. When the workin g volume of the laser is similar to 7 litres, the following high output cha racteristics can be achieved: the maximum power per pulse similar to 2 x 10 (10) W, the pulse duration similar to 740 ns, the total output energy simil ar to 1.5 kJ, the specific output energy similar to 200 J litre(-1), and th e energy gain similar to 10(5).