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Selecting a Photodetector: Using WITS$ as a Rough Guide

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Performance of a photodetector with respect to the four basic attributes of light, in addition to cost, can be used to make an appropriate choice.

Earl Hergert and Slawomir Piatek, Hamamatsu Corporation

Light is a versatile tool for investigating physical and chemical processes in nature. Any specific system being analyzed may, through the light it emits or reflects, communicate information about itself. Electrical signal is an effective medium for processing, transporting and storing information. The photodetector’s role is to convert information propagating in the form of light into an electrical signal with a minimal loss of information quality. Information carried by light may be encoded in any combination of light’s four basic attributes: spectral composition (W),...Read full article

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