Photon counter H16721-50

pulseindustrialhigh-speed

The H16721 series is a photon counting head device containing a metal package photomultiplier tube having a GaAsP/GaAs photocathode and a thermoelectric cooler. The thermoelectric cooler reduces thermal noise generated from the photocathode which also offers a high quantum efficiency, allowing measurement to be made with a good S/N ratio even at very low light levels. The H16721-50 is sensitive over a wide spectral range from 380 nm to 900 nm. The photomultiplier tube is maintained at a constant temperature by monitoring the output from a thermistor installed near the photomultiplier tube and regulating the current to the thermoelectric cooler. Specifications • Photocathode Area Shape : Round • Photocathode Area Size : Dia.5 mm • Wavelength (Short) : 380 nm • Wavelength (Long) : 900 nm • Wavelength (Peak) : 730 nm • Dimension (W x H x D) : 56 mm x 36 mm x 104 mm • Input Voltage : +4.5 V to +5.5 V • Max. Input Voltage : +6 V • Max. Input Current : 50 mA • Count Senstitivity at 500 nm Typ. : 2.6 x 105 s-1・pW-1 • Count Senstitivity at 600 nm Typ. : 4.5 x 105 s-1・pW-1 • Count Senstitivity at 700 nm Typ. : 5.1 x 105 s-1・pW-1 • Count Senstitivity at 800 nm Typ. : 4.8 x 105 s-1・pW-1 • Count Linearity : 1.5 x 106 s-1 • Dark Count Typ. : 125 s-1 • Dark Count Max. : 375 s-1 • Pulse-pair Resolution : 70 ns • Output Pulse Width : 30 ns • Output Pulse Height Min. : 3 V • Output Pulse Height Typ. : 3.6 V • Recommended Load Resistance : 50 Ω • Signal Output Logic : Positive logic • Operating Ambient Temperature : +5 ℃ to +35 ℃ • Storage Temperature : -20 ℃ to +50 ℃ • Weight : 395 g