Amplification due to a lasing transition in CO2 molecules excited in the course of an SiH4 chlorination chain reaction

An experimental study was made of the amplification due to a lasing transition in a CO₂ molecule excited as a result of energy transfer from excited SiH₃Cl molecules formed in the course of a SiH₄ + Cl₂ chain reaction initiated by third-harmonic radiation from a neodymium laser. Investigations were made of dependences of the gain on the mixture pressure and composition. Chemical energy from the SiH₄ chlorination reaction was efficiently converted to laser radiation energy.