The objective of this research program has been to optimize Hydrogen Fluoride/Deuterium Deuterium Fluoride (HF/DF) chemical laser technology for application in lighweight, airborne systems with cw power levels in the range of several hundred watts. Outcoupled power levels as high as 140 watts were observed in a device with a 6 cm gain length at an efficiency of 620 J/g free fluorine, and with a 15 cm nozzle 120 watts ...