Electric-discharge KrCl laser with high pump power

The results of experimental and theoretical studies of the operation of the electric-discharge KrCl laser (λ = 222 nm) at pump power densities of ∼10 MW/cm³ are presented. The radiation energy of 55 mJ for the mixture with He as a buffer gas and 120 mJ for the mixture with Ne at pump pulse duration of ∼30 ns was experimentally obtained. The numerical model of the KrCl laser using the He/Ne/Kr/HCl gas mixture with a uniform pump discharge is described. It is numerically shown that the dependence of the optimal (from the point of view of obtaining the maximum radiation energy) pump power density on the partial pressures of the buffer gas and HCl is close to the linear one.