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Absorption measurements in the CF 2 HCl fundamental vibrational band v 3 , and combination band v 5 + v 9 , for laser energy fluence between 0.1–1.2 cm −2 and 1–100 Torr gas pressure, are reported. Three distinct regions are experimentally observed for the fluence dependence of the absorption cross section σ and the average number of absorbed photons n >. Adding Ar buffer gas to CF 2 HCl enhances the absorption efficiency only in the v 3 band.