Dissociation of iodine molecules and singlet oxygen generation in O2–I2 mixture induced by 1315-nm laser radiation

It is observed that laser light at a wavelength of 1315 nm induces continuous stable fluorescence at the O₂(b ¹Σ → X ³Σ) and I₂(B ³Π_u → X ¹Σ) bands in a O₂–I₂ mixture preliminarily irradiated at a wavelength of 532 nm to achieve partial photolysis of iodine molecules. This testifies to generation of iodine atoms and excited O₂(a ¹Δ), O₂(b ¹Σ), and I₂(B ³Π_u) molecules in the O₂–I₂ mixture under irradiation at 1315 nm.