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The ability to record precision data from low light detection and measurement systems forms one of the core competencies of SensL. A detector is only as good as the electronics which are used to readout and acquire the signal it produces. Intimate knowledge of how SensL technology works and through close work with our customers and the requirements they have for integration of SensL's technology has lead to the development of leading edge measurement and data acquisition systems. A good data acquisition system must be able to integrate quickly and easily into the users system and to do this SensL have incorporated the latest USB technology to provide the ability for our measurement systems to connect directly to our users computers and laptops. These systems are ideal for use with a range of SensL detectors but in keeping with the modular design philosophy from SensL, the systems will also work with a wide range of commercially available detectors in the marketplace such as PIN and APD based photodiodes, PMT and MCP based technology. At SensL we realize that there are a wide range of detectors in the marketplace and seek to work with those technologies to bring our electronics to a wider market. A good example of this is our HRMTime which has been designed to work with the SensL photon counting detectors but also works directly with or through our CFD circuit, all other detectors in the marketplace. We work directly with our customers who look to integrate this technology into their instruments and can often provide building blocks which can significantly decrease time to market. |
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SensL offers a solution for picosecond timing with ultra-fast detectors through the use of a 0.75 GHz Amplifier/Constant Fraction Discriminator (CFD) module. The SensL CFD module comprises of two independent, fully programmable Constant Fraction Discriminators for interfacing with a wide range of detectors. The module setup parameters can be programmed via the USB or directly by the HRMTime using the sensL GUI or DLL drivers. |
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The TimeHarp 200 PC-board is a complete system for picosecond time resolved measurements, ideally suited for fluorescence lifetime measurements with thePDL 800-B as an excitation source. An integrated design keeps cost down, improves reliability and permits new applications. The system allows sustained measurement rates up to 3 million counts/sec and provides a time resolution under 40 ps. The system operates in reverse start-stop mode to allow synchronisation with fast laser sources. Both input triggers are programmable for a range of signal levels. |
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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. |
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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. |
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Detection 
