The silicon PSDs consist of monolithic, PIN photodiodes with either one or two uniform, resistive surfaces. Compare to the discrete element detectors, the PSDs have many advantages such as high position resolutions, fast response, speed and simple operating circuits. In addition, position data is independent of the focus of the light spot on the detector.
Hamamatsu provides a variety of silicon PSDs having various sensitive area sizes and package configurations, including two dimensional and one dimensional detection types.
This catalog provides technical data on two dimensional PSDs and one-dimensional PSDs with long sensitive areas. Other types of PSDs such as small-size PSD are also available with separate data sheets.
Operating Principle and Features of PSD
Large-Area PSD Series Specifications (including prices)