Fourier transform spectroscopy

Matrix isolation Fourier transform infrared spectrometry of polycyclic aromatic hydrocarbons

“…Consequently, attainment of adequate S/N ratios for analytical purposes is often difficult when conventional IR spectrometers are employed. This difficulty should be alleviated by use of interferometric Fourier transform (FT) spectrometers (19)(20)(21)(22)(23)(24). Thus, recent technological developments appear to have vitiated the principal obstacles to development of MI-IR as a useful analytical technique.…”

Determination of broadband-light atomic absorption through interferometric spectrometry with a spatial heterodyne spectrometer

“…I sig (k x ), I d (k x ) and I bkg (k x ). Consequently, the approximation described by eqn (7) inevitably contains unevenly distributed errors that can be rebalanced manually: Fig. 5 Calculation of absorption and absorbance spectra with single image approach and the classic background subtracting signal method.…”

“…Meanwhile, the discrete sampling of the interferogram gives a limit to the upper spectrum frequency. 7 Therefore, we chose an available camera with the greatest pixel number, especially the horizontal pixel number, in the present study. Moreover, the objective ( i.e.…”

“…Based on Michelson's early works, various concepts of interferometric spectrometers were established. 6 In addition to those well-known mirror-based longitudinal spectrometers that contain one moving arm, 7 the ones that are static (or contain no moving parts) have been drawing increasing attention. 8,9 Static interferometric spectrometers can be quite powerful because of their capability of exploiting the wave nature of light, and are generally branched into mirror-based and grating-based categories.…”