New photodiode with extremely low excess noise for optical communication and long range LIDAR

https://phys.org/news/2023-02-photodiode-extremely-excess-noise-optical.html

"transform single electron input to cascade of electrons at output... high multiplication factor with very little added noise... measured noise factor at multiplication factor of 20 is at least three times lower than commercial avalanche photodiode... GaAsSb absorption region has excellent detection efficiency at infrared wavelengths (up to 1,700 nm)... excess noise factor of 2.48 extremely low noise APD... generate step changes in optical communication and long range LIDAR"