Ge-CAL Spectral Responsivity Standard (800-1800nm)

  • Ge-CAL Spectral Responsivity reference Standard 800-1800nm

Calibrated in our dedicated laboratory, in short-circuit conditions, with respect to standards calibrated by the Physicalish Technische Bundesanstalt (PTB, Germany) a calibration range of 800-1800nm is on offer.

Housing a 5mm diameter active area germanium photodiode (800-1800nm), the Ge-CAL delivers enhanced linearity and exceptionally low noise. Operated in the photovoltaic mode, the photocurrent generated by this detector is best measured in using a trans-impedance amplifier such as that of the Bentham 487 or 477.

Core benefits


  • Spectral responsivity standard, 800-1800nm (A.W-1)
  • Germanium photodiode 
  • High sensitivity 5mm diameter active area
  • Calibration performed with respect to the Physicalish Technische Bundesanstalt (PTB, Germany)
  • Compatible with the entire range of Bentham monochromators and accessories
  • Recommended for use with the 400 Series of detection electronics


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