High-end detection module for NIR-single-photon counting and timing.
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Availability date: 08/31/2016
It is based on an InGaAs/InP SPAD with 25 µm active area diameter (10 µm for fibre-pigtailed version) that allows photon counting from 900 nm to 1.7 µm. The module consists of the detector and the control unit which are integrated in a compact housing. This allows to easily integrate it in any experimental setup.
The electronics surrounding the detector was designed to exploit the good performance of InGaAs/InP SPADs. The module includes a pulse generator for gating the detector, a front-end electronics for avalanche sensing, a fast circuitry for promptly quenching the avalanche current, by acting both at the cathode and at the anode of the detector, and some sub-circuits for signal conditioning.
Thanks to its ease-of-use and great flexibility, all the parameters of the SPAD can be adjusted by the user, in order to optimize the operating conditions according to the measurements to be performed.
|Active area diameter||Free space||25||µm|
|FC/PC fibre pigtailed (SMF-28)||10|
|Photon Detection Efficiency||Vex=2 V; λ=1550 nm||10||%|
|Timing jitter (FWHM)||At Vex=6 V||70||ps|
|Darkcountrate||Vex=2 V; T=229 K Free space||8||10||kcps|
|Vex=2 V; T=229 K SM fibre-pigtailed||1||2||kcps|
|SPAD temperature||SW selectable||225||243||K|
|Excess bias range||Free Gate and free running||2||5||V|
|Hold-off time||SW selectable in 10 ns steps||1||3000||µs|
|Gatewidth||SW selectable in 1 ns steps||1||1.4||ns-ms|
|Gate repetition frequenzy||100||MHz|
|Internal trigger frequency||SW selectable in 1 Hz steps||100||100||Hz-MHz|
|Delay path||SW selectable in 1 ns steps||0||100||ns|
|Counter integration time||SW gesteuert in 20 ms steps||0,1||60||s|
|PHOTON OUT, NIM OUT||NIM Output||-800||0||mV|
|Required load (DC)||50||Ω|
|PHOTON OUT||Pulse width||10||ns|
|TRIGGER IN, AUX IN||Amplitude||-2||2,5||V|
|Load Impedance (DC)||50||Ω|
|TTL OUT||Output levels||0||2,7||V|
|Required load (DC)||50|