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An avalanche photodiode (APD) is a highly sensitive type of photodiode, which in general are semiconductor diodes that convert light into electricity via the ...
The wide intrinsic region makes the PIN diode an inferior rectifier (one typical function of a diode), but it makes it suitable for attenuators, fast switches, photodetectors, and high-voltage power electronics applications. The PIN photodiode was invented by Jun-Ichi Nishizawa and his colleagues in 1950. It is a semiconductor device.
The silicon avalanche photodiode is a high-gain photon detector. They are "ideal for use in high-speed, low-light-level applications". [3] The avalanche photodiode is operated with a reverse bias voltage of up to hundreds of volts, slightly below its breakdown voltage.
Avalanche photodiodes are photodiodes with structure optimized for operating with high reverse bias, approaching the reverse breakdown voltage. This allows each photo-generated carrier to be multiplied by avalanche breakdown , resulting in internal gain within the photodiode, which increases the effective responsivity of the device.
Commercial single-photon avalanche diode module for optical photons. A single-photon avalanche diode (SPAD), also called Geiger-mode avalanche photodiode [1] (G-APD or GM-APD [2]) is a solid-state photodetector within the same family as photodiodes and avalanche photodiodes (APDs), while also being fundamentally linked with basic diode behaviours.
There are many examples of RCE devices such as the p-i-n photodiode, Avalanche photodiode and Schottky diode that verifies the theory successfully. Some of them are already in use today, while there are future use cases such as modulators, and optical logics in wavelength division multiplexing (WDM) systems which could enhance the quantum ...
Photodiodes can be further categorized into: a. PIN Photodiodes: These photodiodes have an additional intrinsic (I) region between the P and N regions, which extends the depletion region and improves the device's performance. b. Schottky Photodiodes: In Schottky photodiodes, a metal-semiconductor junction is used instead of a PN junction.
In an avalanche photodiode the original charge carrier is created by the absorption of a photon. The impact ionization process is used in modern cosmic dust detectors like the Galileo Dust Detector [ 2 ] and dust analyzers Cassini CDA , [ 3 ] Stardust CIDA and the Surface Dust Analyser [ 4 ] for the identification of dust impacts and the ...