Spectral and energy parameters of a pulsed F{sub 2}-(H{sub 2}+D{sub 2})-He-mixture HF/DF laser

Theoretical and experimental studies of spectral and energy characteristics of radiation of a photoinitiated HF/DF laser working on the chain reaction in the F{sub 2}:(H{sub 2}+D{sub 2}):O{sub 2}:He=3:1:0.3:6.7 mixture are performed under atmospheric pressure as functions of the ratio of the initial concentrations of H{sub 2} and D{sub 2} and the resonator losses. Optimal conditions are determined for simultaneous lasing in HF and DF molecules in the spectral range 2.7 - 4.8 {mu}m. (lasers)