The report summarizes a research program on chemical lasers. Parametric studies of the HF, DF, HF-CO2, and DF-CO2 purely chemical lasers were accomplished with a prototype system to provide design data for CO2 lasers of multikilowatt size. The second phase of the grant resulted in accurate determinations of vibrational matrix elements and the dipole moment function for HF and DF molecules. Vibrational matrix elements were measured through the fifth overtone for both molecules. Additional investigations were launched at the end of the grant period directed toward the discovery of new chemical laser systems capable of operation at visible wavelengths. (Modified author abstract).