H8236-07

HPD (HYBRID PHOTO-DETECTOR) MODULES PRELIMINARY DATA OCT. 2000 H8236-07, -40 PATENT PENDING The HPD (Hybrid Photo-Detector) is a new vacuum photo-detector including a photocathode and an avalanche diode. The HPD provides a gain of more than 1000 in a single multiplication process called 'electron bombardment multiplication'. The photoelectrons from the photocathode are accelerated by a strong electric field to hit the avalanche diode and release a large number of electron-hole pairs corresponding to the acceleration energy. This excellent first multiplication process enables the HPD to achieve excellent multi-photon energy resolution. This first multiplication process is followed by the second avalanche mode multiplication to provide sufficient gain for a variety of applications. H8236 is an HPD module, containing high voltage power supplies and a pre-amplifier. FEATURES q Able to discriminate multi-photon events q Low excess noise q High Q.E. from 450 nm to 650 nm (H8236-40) q Simple operation Built-in high voltage power supply and pre-amplifier q Low after pulse APPLICATIONS q Photon counting application q Low intensity pulse detection q Laser scanning microscope q Particle counter SPECIFICATIONS Parameter Spectral Response Peak Sensitivity Wavelength Photocathode Material Quantum Efficiency E Effective Area Sensitivity Bandwidth Offset (Typ.) Noise r.m.s. (Typ.) AC coupled Load Impedance DC coupled Maximum Voltage Polarity To Pre-amplifier (PIN 2) To Diode Bias Power ...