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2003
Journal Article
Title
Theory of avalanche multiplication and excess noise in quantum-well infrared photodetectors
Other Title
Theorie der Lawinenmultiplikation und des Überschussrauschens in Quantenfilm Infrarot-Photodetektoren
Abstract
A theoretical treatment of the noise current of quantum-well infrared photodetectors in the presence of avalanche multiplication is presented. Avalanche multiplication results in a characteristic excess noise which is expressed as a function of the avalanche multiplication factor and the capture probability. The multiplication factor can thus be determined from the photoconductive gain and the noise gain.