Effect of flow conditions on the amplification and generation of pulsed gasdynamic lasers in N2O and CO2

The weak signal amplification is studied in jets involving N2O-N2He, N2O-N2 and CO2-CO-N2-He mixtures with installations combining a shock-tube and slit-throat (1.5×40 and 2.5×70 mm2) or two-dimensional wedge (ϕ=15°, A/A* = 15) nozzles. The relationships between amplification and gasdynamic characteristics are elucidated.