Afterpulse Background Suppression in Time-Correlated Single Photon Counting Lifetime Experiments using Optimized Gate Filter

Using a monostable multivibrator, the signal-dependent afterpulsing background from a single photon avalanche diode was suppressed. This digital filter gate was characterized and optimized using photoluminescence decay lifetime measurements to show a reduction in systematic error that is 25% of the measured lifetime and ∼500X improvement in acquisition time when compared with the time taken to obtain a comparably reliable result by reduction of …