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Photodetectors

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Buyer's Guide

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72 suppliers for photodetectors are listed.

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Ask RP Photonics for advice on photodetection, e.g. concerning details of photodiodes, electronic preamplifiers, etc.

Definition: devices used for the detection of light

German: Photodetektoren, Lichtdetektoren

Category: photonic devices

How to cite the article; suggest additional literature

Photodetectors are devices used for the detection of light – in most cases of optical powers. As the requirements for applications vary considerably, there are many types of photodetectors which may be appropriate in a particular case:

Important Properties of Photodetectors

Depending on the application, a photodetector has to fulfill various requirements:

Different detector types, as listed above, differ very much in many of these properties. In typical application scenarios, some requirements totally rule out the use of certain detector types, and quickly lead to a fairly limited choice. Note also that there are some typical trade-offs. For example, it is frequently difficult to combine a high detection bandwidth with a high sensitivity.

See also: photodiodes, p–i–n photodiodes, avalanche photodiodes, metal–semiconductor–metal photodetectors, velocity-matched photodetectors, photomultipliers, powermeters, photon counting, noise specifications, noise-equivalent power, responsivity

In the RP Photonics Buyer's Guide, 72 suppliers for photodetectors are listed.

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A Quiz Question

taken from the Photonics Quiz:

Why does the use of a laser crystal with a very broad wavelength tuning range typically lead to a high laser threshold?

(a) because a broad emission bandwith leads to strong ASE

(b) because a broad emission bandwith leads to a smaller σ–τ product

(c) because the broad bandwidth results from microscopic disorder, which increases scattering losses

After selecting your answer(s) and pressing this button, find the explanations on the left side.

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