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Produits > Test et analyse par la lumière > Etalons > Photodiode germanium de référence Ge-CAL

Photodiode germanium de référence Ge-CAL Photodiode germanium de référence Ge-CAL

The Ge-CAL is a general purpose germanium photodiode offering excellent linearity and low noise, calibrated in spectral response (A.W-1) over the wavelength range of 800-1800nm. Calibration is performed with respect to a detector of the same type calibrated by Physikalisch-Technische Bundesanstalt (PTB).

Its' mount is compatible with the entire range of Bentham monochromators and accessories.

This detector is recommended for use with the 400 Series of detection electronics.



Active area 5mm diameter
Max. Operating Temperature -40 to +70°C
Temperature dependence of responsivity Up to 3%/ °C at band edge
Window material Glass
Peak Wavelength 1540nm
Peak Responsivity 0.9 A.W-1
Dark Current <1pA
Max Shunt Resistance 15 kΩ
NEP 1.5 x 10-12 W/Hz1/2
Measurement Type Spectral responsivity under short-circuit conditions
Wavelength Range 800-1800nm, 5nm intervals
Calibration Frequency 3-yearly recommended
Temperature at Calibration 20°C


Si-CAL spectra


Photodiode germanium de référence Ge-CAL