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Instrumentation schematic for (a) time-gated FLIM and (b) the concept of time gating. The time-gated system was a wide-field system with an intensifier for the control of gating. With the time-gated system, the intensities along decay curves were integrated by the detector. CCD=charge-coupled device, g=gate width; dt=time interval between the starting points of two consecutive gates; black solid arrows: electronic signals; blue dotted arrows: optical signals. (Color online only.)
