The C16531 series is a photon counting module that can detect low-level light. These modules consist of a thermoelectric cooled single photon avalanche diode (SPAD), an amplifier, a comparator, a SPAD bias circuit, and a temperature controller. The photosensitive area is available in two sizes of φ50 μm and φ100 μm, and such small photosensitive areas offer a low dark count. These modules operate by simply connecting to an external power supply (±5 V).
- Single photon counting is possible.
- High sensitivity in the long wavelength range
- Low dark count
- Low afterpulse
|Wavelength type||VIS to NIR|
|Effective photosensitive area||φ50 μm|
|Spectral response range (min./max.)||400 to 1000 nm|
|Dark count (typ.)||20 cps|
|Photon detection efficiency (typ.)||65 %|
|Measurement condition||Ta=25 ℃, λ=λp, Vs=±5 V|
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