Avalanche Photodiodes

Avalanche photodiodes (APDs) are specialized light sensors that are highly sensitive and can detect very low levels of light. They work by using a process called avalanche multiplication, where incoming light photons trigger the release of electrons, which then collide with other atoms, creating more electrons. This amplifies the initial signal, allowing the sensor to detect weak light signals. APDs are commonly used in telecommunications, medical imaging, and scientific research, where precision in measuring light is crucial. Their high sensitivity and fast response make them valuable in various applications that require detecting low light levels.