TCSPC Life Time (PICOQUANT)

TCSPC Modules

PicoHarp 300

The PicoHarp 300 is a high-end, easy-to-use, plug and play Time-Correlated Single Photon Counting (TCSPC) system. It is connected to a PC through a state of the art USB 2.0 high speed interface. A new design approach provides identical synchronized but independent input channels. They can be used as detector inputs for coincidence correlation experiments or as a pair of state and stop inputs for TCSPC. It allows a forward start-stop operation even at full repetition rate of mode locked lasers with stable repetition rate up to 84 MHz. Experiments with low repetition rate benefit from the PicoHarp’s multi-stop capability.

The design allows high measurement rates up 10 million counts/sec and provides a highly stable, crystal calibrated time resolution of 4 ps.

This time resolution is well matched to the SPADs of the PDM series or micro-channel plate photomultiplier tubes (MCP).

Overall IRF widths down to 50 ps can be achieved even with pulsed diode lasers. Both input channels are equipped with constant fraction discriminators (CFD), sensitive on the falling edge.