AlxGa1−xN-based avalanche photodiodes with high reproducible avalanche gain

Gain-Bandwidth Characteristics of Thin Avalanche Photodiodes

The frequency-response characteristics of avalanche photodiodes (APDs) with thin multiplication layers are investigated by means of a recurrence technique that incorporates the history dependence of ionization coefficients. In addition, to characterize the autocorrelation function of the impulse response, new recurrence equations are derived and solved using a parallel computer. The mean freque...

Solar-blind avalanche photodiodes

There is a need for semiconductor based UV photodetectors to support avalanche gain in order to realize better performance and more effectively compete with existing photomultiplier tubes. However, there are numerous technical issues associated with the realization of high-quality solar-blind avalanche photodiodes (APDs). In this paper, APDs operating at 280 nm, within the solar-blind region of...

High Performance Ultraviolet 4H-SiC Avalanche Photodiodes

Avalanche Photodiodes in High-Speed Receiver Systems

The avalanche photodiode (APD) is widely used in optical fibre communications (Campbell, 2007) due to its ability to achieve high internal gain at relatively high speeds and low excess noise (Wei et al., 2002), thus improving the system signal-to-noise ratio. Its internal mechanism of gain or avalanche multiplication is a result of successive impact ionisation events. In an optical receiver sys...

Avalanche Photodiodes: A User's Guide

Avalanche photodiode detectors have and will continue to be used in many diverse applications such as laser range finders and photon correlation studies. This paper discusses APD structures, critical performance parameters and the excess noise factor.