Time-Resolved Spectroscopy with Fourier Transform Spectrometers: Maintaining the Fellgett Advantage

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Abstract
It is shown how the relative white light and IR zero path signals can be adjusted on FT-IR interferometers which share common optics for the two beams so that the full Fellgett advantage is recovered for time-resolved spectra. Time-resolved KBr:CN− vibrational fluorescence spectra in the electronic ground state are used to illustrate the improved measurement technique.