Why Pulse Rise & Fall Times are Different in Photodetector Measurement

We review factors that contribute to output pulses of PIN photodetectors tending to have a longer fall time than rise time. Factors include photocarrier transit effects, diffusion current, saturation, and circuit design.

We review factors that contribute to output pulses of PIN photodetectors tending to have a longer fall time than rise time. Factors include photocarrier transit effects, diffusion current, saturation, and circuit design.