The PicoHarp 300 can be used in different operation modes: h-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 and synchronized but independent input channels. They can be used as detector inputs for coincidence correlation experiments or as a pair of start 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 to 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 50ps can be achieved withpulsed diode lasers. With short pulsed lasers such as Ti:Sapphire lasers IRF widths as short as 30 ps can achieved. Both input channels are equipped with constant fraction discriminators (CFD), sensitive on the falling edge.

The HydraHarp 400 is a high-end, easy-to-use, plug and play Time-Correlated Single Photon Counting (TCSPC) system with scalability for multiple channels*. It is connected to a PC through a USB 2.0 high speed interface. It provides identical synchronised but independent input channels. They can be used as detector inputs for coincidence correlation experiments as well as independent stop inputs for TCSPC. A dedicated common sync input is provided for TCSPC with fast excitation sources. This allows forward start-stop operation at the full repetition rate of mode locked lasers with stable repetition rate up to 150 MHz. Experiments with low repetition rate benefit from the HydraHarp's multi-stop capability.

A family of photon counting and timing systems ranging from the world's smallest and lowest cost photon counting device, the PCDMini, which is optimized for high volume commercial OEM applications, to the world's first intelligent multi-channel photon counting and timing system, the PCMPlus, with an integrated counter, timing electronics and USB interface. SensL is the first to include high end microprocessing power inside its low light sensing modules. Controlled via a Java based graphical user interface SensL's products can be directly integrated into low light sensing applications without the need for additional counting cards or data analysis software. An example of the benefit of this integration is evident in the PCMPlus, which integrates high level functionality such as Time Tagging with 2.5ns resolution, Time Binning Multi-channel Scalar/Averager (MCS/ MCA) and Time Correlated Single Photon Counting (TCSPC) into a single convenient plug and play system. The new HRMTime introduces a <100ps timing resolution option in addition to the other PCSTime functionality described above.

PCDMini - High Performance Photon Counting Device

SensL's PCDMini Photon Counting Device is the first miniature photon counting system on the market and features SensL's new quenching architecture with optional snap-on boards for enhanced functionality. The sensor is hermetically sealed and available with an optional add-on cooler board for applications that require extremely low Dark Count. In addition, an optional snap-on USB Interface Board is available which significantly simplifies the task of integrating the PCDMini into any measurement system. Its integrated counter functionality eliminates the requirement for a separate data acquisition system. This ease of integration, combined with the compact and miniature form factor of the product makes the PCDMini the ideal photon counting solution for OEMs.

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