cw HF chemical laser from the reaction of F atoms with C3H8and C4H10

cw laser emission has been obtained from vibrationally excited HF produced by the reaction of F with C3H8 and C4H10. F atoms are obtained by combusting F2 and D2, diluted with He, with F2 in excess. The combustor products are mixed with C3H8 or C4H10 using parallel flow (pressure matched) produced by supersonic nozzles for both the F, F2, DF, and He combustor product mixture and C3H8 and C4H10.