Comb-based FTIR spectroscopy of CO perturbed by N₂ at 4.6 µm

Line-shape measurements of the fundamental vibrational band of CO at 4.6 µm perturbed by N 2 with a mid-infrared frequency comb-based Fourier-transform spectrometer were performed. Precise collisional line-shape parameters for 41 lines were determined, including the pressure broadening and shifting and speed-dependence of the collisional width. The results were compared with sparse literature data available.