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Shot Noise Suppression in Avalanche Photodiodes

Feng Ma·Shuling Wang·Joe C. Campbell
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Abstract

We identify a new shot noise suppression mechanism in a thin (~100 nm) heterostructure avalanche photodiode. In the low-gain regime the shot noise is suppressed due to temporal correlations within amplified current pulses. We demonstrate in a Monte Carlo simulation that the effective excess noise factors can be <1, and reconcile the apparent conflict between theory and experiments. This shot noise suppression mechanism is independent of known mechanisms such as Coulomb interaction, or reflection at heterojunction interfaces.

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Feng Ma, Shuling Wang, Joe C. Campbell. 2005-10-06. Shot Noise Suppression in Avalanche Photodiodes. https://doi.org/10.1103/physrevlett.95.176604

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