Knowledge Bank

Absorption spectra of $CO2,N2O$ and $CS2$ have been recorded using the Bruker IFS 120 HR spectrometer. Absolute frequency calibration for the mid-infrared was completed using the $CO2$ and $N2O$ absorption lines. The transitions were compared to previous data1 and produced a RMS deviation of $0.00005cm-1$. The $CS2$ spectra at $2100cm-1$ was used to characterize the instrumental lineshape. After a correction for field of view effects an agreement of 0.03 % transmission was achieved between experimental and theoretical lineshapes. The results of the characterization and calibration will be discussed.