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Comparison of the time-resolved IR data recorded by QCL (red) and step-scan FTIR spectroscopy (black). (A) Extracted IR difference spectra at 6 μs and 6 ms. (B) Kinetics of absorbance changes (ΔA) at 1616 and 1648 cm−1. (Dashed horizontal lines) Zero line (ΔA = 0). The FTIR data have been scaled to the amplitude of the QCL data to facilitate the comparison. To see this figure in color, go online.
