抄録
Small signal gain of a throat mixing gasdynamic laser was measured. This mixing GDL was driven by decomposed gas of liquid N2O and mixed with liquid CO2 at the throat of a screen nozzle. The maximum gain of 0.42%/cm was obtained at a H2O concentration in the donor gas of about 0.1 %. When a H2O concentrationin the donor gas was less than 0.1 % the optical gain was significantly reduced due to a large amount of O2 which was generated by decomposition of the N2O. Small signal gain was monotonously increased with increasing the CO2 concentration up to 30%.
