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. 2014 Apr 21;22(9):10221–10232. doi: 10.1364/OE.22.010221

Fig. 2.

Fig. 2

Analog-digital hybrid data processing of Fourier confocal FLIM. (a) Frequency-sweeping laser excitation and fluorescence emission signals from the sample. (b) Down-mixed emission signals. (c) Measured modulation and phase signal of GFP in comparison to those of fluorescein.