Fourier transform spectroscopy, a technique which Mertz1 once called “a disagreeable indirect method to record a spectrum”, has matured in recent years into a widely used and accepted spectroscopic technique. The rapid increase in the popularity of Fourier spectroscopy can be attributed, at least in part, to the technological advances in computer hardware and to the development of the Cooley-Tukey alogrithm2 for computing Fourier transforms quickly. Both of these developments have helped to popularize Fourier spectroscopy and have given strong impetus to its growing appeal and commercialization by significantly reducing the time required to compute a final spectrum from the recorded interferogram.
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