The PDM series photon counting detector modules are all solid-state instruments. The sensor (MPD-SPAD) has a photon detection efficiency of 50% at 532nm, they have low dark counts and low after-pulsing. With the fast-timing option (additional circuit board installed) the PDM module provides better than 30ps FWHM photon timing resolution.
The PDF series photon counting detector modules are all solid-state instruments. The sensor (MPD-SPAD) has a photon detection efficiency of 50% at 532nm, they have low dark counts and low after-pulsing. With the fast-timing option (additional circuit board installed) the PDF module provides better than 30ps FWHM photon timing resolution. The fiber optic is coupled directly to the sensor without the use of any optics. In this way a coupling efficiency as high as 100% and no less than 80% has been achieved independently of the wavelength.
