Advancements in TCSPC: overcoming pile-up limitations with high-speed photon detection versatile module

The Time-Correlated Single-Photon Counting (TCSPC) technique excels in capturing ultra-fast, faint optical signals, crucial in fields like biomedical research, quantum science, and communications. Traditional TCSPC methods face limitations due to the pile-up effect, restricting count rates to 1-5% of the laser excitation rate. A new TCSPC approach integrates system status information with traditional data histograms, overcoming pile-up limitations. In this work, we validate the novel technique utilizing a Hybrid Photodetector (HPD).