An investigation of avalanche noise in the non local impact ionization regime

TL;DR

This paper investigates how dead space and resonance effects influence avalanche noise in non-local impact ionization, revealing conditions for very low excess noise factors and more deterministic avalanche behavior.

Contribution

It introduces a detailed analysis of dead space and resonance effects on avalanche noise, highlighting conditions for reduced noise in non-local impact ionization regimes.

Findings

Dead space reduces excess noise factor at given multiplication.

Resonance effects lead to deterministic avalanche behavior.

Very low excess noise factors observed at specific multiplications.

Abstract

The probability distribution function (PDF) for avalanche multiplication and the excess noise factor are calculated using non local ionization coefficients. The dead space effect is shown to reduce the excess noise factor for a given multiplication. At higher electric field values a resonance effect is observed in addition to the dead space effect. The resonance effect leads to a more deterministic behaviour in the PDF for avalanche multiplication and this gives rise to very low excess noise factors for multiplication values of 2, 4, 8 and 16 if the ionization coefficient ratio is small.