WELWYN GARDEN CITY, England, Dec. 22, 2010 — Hamamatsu Photonics UK Ltd. has introduced a hybrid photodetector (HPD) module, the H10777, that dispenses with the traditional metal dynodes found within a conventional photomultiplier tube. Instead, photoelectrons are accelerated in a high electric field onto a silicon avalanche diode target that is connected to form the cathode/output of the device. The advantage of the HPD construction is single photoelectron resolution capability, combined with very fast response compared to that delivered by conventional photomultiplier tubes. Two versions are available, a bialkali tube with spectral response ranging from 220 to 650 nm, and a GaAsP semiconductor cathode version operating from 300 to 720 nm, with a peak quantum efficiency of >45 %. The H10777-01 offers a transit time spread of 35 ps FWHM. Intended applications include fluorescence lifetime measurements using time-correlated photon detection methods, time-of-flight measurements in high-energy physics experiments, lidar, biomedical research, atmospheric pollution measurement, laser scanning microscopy and fluorescence correlation spectroscopy.