The PHDX.2005 unit consists of an input slit, a beam splitter (50/50) and two PMTs.

PHDX.2005 and PHDY.2005 are devices primarily designed for photoncounting experiments. They show the quantum behaviour of photons. They clearly demonstrate the influence of various parameters on photon counting statistics (input amplification, dark current, treshold setup, PMT sensitivity and PMT control voltage, input flux, etc.). These devices are suitable for testing of parameters of PMTs (photon multiplier tubes).
See also PHDY.2005


Spectral range

300 to 700 nm (depends on PMTs)

Primary PMTs

H5783P (Hamamatsu)

Sensitivity control voltage

0.25 to 0.9 V

DC power

12 V

Output line

RG 178

Output signal connectors


Output power & control line connectors



1 kg

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