I think when you talk about pile-up, it is a different phenomenon that you are describing (with a streak camera, I'd call it a backsweep or re-sweep, not sure it it has a name in TCSPC). Pile-up should be related to the dead-time of your detector and the intensity of your excitation (and, ergo, intensity of emission) - when the intensity is too strong, you may have multiple photons arriving in one detection cycle, but due to the dead-time of the PMT/SPAD (it detects the first photon and ignores all other arrivals for a while), you detect only the first arriving photons, introducing errors into the measurement - artificially lowering the lifetime you measure, because you are likely to ignore photons that arrive later in the detection period, since some photons usually arrive already at the beginning of that period.
Yes, that's better. And I don't think that by lowering the intensity of the incoming light you can send in a single-photon (as was claimed in this video).
I think when you talk about pile-up, it is a different phenomenon that you are describing (with a streak camera, I'd call it a backsweep or re-sweep, not sure it it has a name in TCSPC). Pile-up should be related to the dead-time of your detector and the intensity of your excitation (and, ergo, intensity of emission) - when the intensity is too strong, you may have multiple photons arriving in one detection cycle, but due to the dead-time of the PMT/SPAD (it detects the first photon and ignores all other arrivals for a while), you detect only the first arriving photons, introducing errors into the measurement - artificially lowering the lifetime you measure, because you are likely to ignore photons that arrive later in the detection period, since some photons usually arrive already at the beginning of that period.
Yes, that's better. And I don't think that by lowering the intensity of the incoming light you can send in a single-photon (as was claimed in this video).
ty very much
NICE SIR