New chemically pumped I(2P1/2→2P3/2) laser at 1.315 μm

cw laser action has been demonstrated on the electronic J* (2P112) —* I (2P312) transition of atomic iodine at 1 .3 15 tm from the NC! (a'A) + I (2P 3/2) energy transfer reaction. The stimulated emission was generated in a transverse subsonic flow device when hydrogen azide, HN3, was injected into a flow of iodine and chlorine atoms. The measured laser output power was 180 mW.