Time-correlated single-photon counting for underwater applications (Conference Presentation)

Time-correlated single-photon counting (TCSPC) has emerged as a key detection technology for lidar and depth profiling in a number of emerging application areas due to its high optical sensitivity and excellent surface to surface resolution. We have applied this technique to measure three-dimensional scenes of stationary and moving targets in several underwater environments. The presentation will show the results of laboratory-based experiments obtained using several different optical transceiver configurations. Particular attention will be given to underwater depth imaging using silicon single photon avalanche diode (Si-SPAD) arrays with in-pixel picosecond timing electronics.