A potential problem with the attenuated total reflection that is used to measure infrared spectra is described. The problem is the possibility that the anomalous dispersion associated with an infrared absorption band may cause the experimental configuration to move from the attenuated total reflection regime to the specular reflection regime, with consequent distortion of the apparent absorption bands and consequent error in the interpretation of the bands if the problem is not recognized.
© 1995 Optical Society of America
Rabah Belali, Jean-Marie Vigoureux, and Joseph Morvan, "Dispersion effects on infrared spectra in attenuated total reflection," J. Opt. Soc. Am. B 12, 2377-2381 (1995)