Singlet oxygen generation and chemical oxygen-iodine lasers

The chemical generation of singlet delta oxygen is studied in a bubble column reactor. The yield of O2 1 Delta is measured as a function of pressure and flow rate. Chlorine and water vapor are also measured. Good lasing conditions are achieved at relatively high pressure (300 to 500 Pa). A one-dimensional flow model of the chemical oxygen-iodine laser is proposed and compared with experiments performed in low-pressure subsonic flow lasers. Theoretical results are also presented at higher pressure in supersonic flow conditions.