The micro PMT is the world’s first PMT to be fabricated through the use of semiconductor processes for MEMS (micro-electro-mechanical systems) devices. Its prototype is thinner than the smallest PMT that Hamamatsu currently offers. By comparison, the microPMT has only 1/7th the volume and 1/9th the weight. Due to this extremely small size, it is expected that microPMTs will contribute to the development of more compact instruments for medical diagnostics, environmental monitoring, and applications in many other fields.
The PMT module is basically comprised of a photomultiplier tube to convert light into electrical signals, a high-voltage power supply circuit, and a voltage divider circuit to distribute the optimum voltage to each dynode, all assembled into a single compact case. In addition to these basic PMT modules, Hamamatsu also provides modules having various additional functions such as signal processing, cooling and interface to PC.
The HPD (Hybrid photo detectors) are completely new PMTs that contain a semiconductor device within an electron tube (vacuum tube). Photoelectrons emitted from the photocathode are directly bombarded onto the semiconductor to multiply the photoelectrons. This method allows efficient electron multiplication with less noise.
Hamamatsu Photonics is a worldwide leading manufacturer of opto-electronic components and systems. Among others we offer sensors and systems for spectroscopy (including ultra fast), scientific-grade cameras, beam monitoring solutions, photon counting detectors and systems, photomultipliers, photodiodes, IR detectors.