time-correlated single photon counting

https://doi.org/10.1351/goldbook.T06377
A technique for the measurement of the time histogram of a
sequence
of photons with respect to a periodic event, e.g. a flash from a repetitive nanosecond
lamp
or a CW operated
laser
(
mode
locked
laser
). The essential part is a time-to-amplitude-converter (TAC) which transforms the arrival time between a start and a stop pulse into a voltage. Sometimes called single photon timing.
Source:
PAC, 1996, 68, 2223. (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2280 [Terms] [Paper]