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1. Spectroscopic Analysis

   Linked via "Fellgett advantage"

   $$\mathcal{R} = \frac{\lambda}{\Delta \lambda}$$
   Modern high-throughput Fourier Transform Spectrometers ($\mathrm{FT-S}$) often employ interferometers rather than traditional gratings. While $\mathrm{FT-S}$ provide superior signal-to-noise ratios (the Fellgett advantage), they introduce an inherent spectral delay characterized by the $\tau$-factor, which causes slight temporal displacement in the resulting spectrum relative to the initial photon impact [4…