The photodiode responds to radiation from the short wavelength cutoff of the magnesium fluoride window (about 1130A) to a long wavelength limit of about 3000A, which is determined by the photocathode material.
General Specifications:
Calibration range: 1164A - 2537A (23 wavelengths)
Window material: magnesium fluoride
Cathode material: cesium telluride
Window seal: indium eutectic
Max photocurrent: 1 x 10-^8 ampere
QE range (typ): 0.02 - 0.2 electrons per photon
Active area: 1 cm diameter on center (quality region)
Anode voltage: 150 V
The photodiode has two elements: the anode, which is a stainless steel cylinder projecting from the Teflon body, and the cathode, which is the mirror-like surface seen through the anode. The cathode is electrically in contact with the machined aluminum piece with the threaded hole.
Calibration range: 50A - 1216A (61 wavelengths)
Window material: no window
Cathode material: aluminum with 150A aluminum oxide layer
Window seal: none
Max photocurrent: 1 x 10-^9 ampere
QE range (typ): 0.01 - 0.15 electrons per photon
Active area: approx. 1 cm
Anode voltage: 60 V (175A - 1216A); 100 V (50A - 166A)