The advantage of the HPD construction is single photoelectron resolution capability, combined with very fast response compared to conventional PMTs. Two versions of the H10777 are available, a bialkali tube with spectral response range from 220 nm to 650 nm, and a GaAsP semi-conductor cathode version working from 300 nm to 720 nm, with a peak QE of > 45 %.
The H10777-01 offers a TTS (transit time spread) of 35 ps FWHM. Intended applications include fluorescence lifetime measurements (using TCSPC = 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.