The C11202 series is a single-photon counting module capable of detecting low light levels. The C11202 series is made up of a thermoelectrically cooled single-pixel photon counter (SPPC), an amplifier, a comparator, a high-voltage power supply 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. Modules operate just by connecting them to an external power supply (±5 V).
|Built-in sensor||TE-cooled Single pixel photon counter (SPPC)|
|Effective photosensitive area||φ50 μm|
|Spectral response range (min./max.)||320 to 900|
|Dark count (typ)||0.007 kcps|
|Photon detection efficiency (typ.)||70 %|
|Measurement condition||Ta=25 ℃, λ=λp, Vs=±5 V|
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