High-Speed and Wide Dynamic Range Avalanche Photodiode for Coherent Lidar Application

Abstract

A high-sensitivity and a high-power photo-receiver is preferred in coherent lidar system. In this work, we demonstrate top-illuminated APDs, which can simultaneously exhibit low excess noise (k<0.1) and wide 3-dB bandwidth (14GHz) with high responsivity (6.7A/W) under the operation at saturation output (3 mA).