Interferometry, as applied in FTIR, uses what type of monochromator?

Question

Quizplus · Accepted Answer

Interferometry in FTIR uses a Michelson interferometer, which splits incoming light into two beams and recombines them after passing through a sample and a reference cell. The interference pattern generated is used to calculate the absorption spectrum of the sample. Gratings and prisms are used in other types of monochromators, but not in interferometry in FTIR. Selected filters for the source may be used to narrow the band of wavelengths entering the interferometer, but they do not play a direct role in interferometry.

Interferometry, as Applied in FTIR, Uses What Type of Monochromator