An Avalanche Photodiode is a highly sensitive semiconductor detector that converts light into electrical current and amplifies weak signals through avalanche multiplication. APDs provide higher gain than standard photodiodes, enabling detection of low-level optical signals in LiDAR, optical communications, sensing, and scientific instrumentation. GPD Optoelectronics produces high-performance APDs engineered for reliability, low noise, and demanding infrared applications.
Silicon detectors lose effectiveness past 1000 nm, right where fiber optics, LiDAR, spectroscopy operate. See why InGaAs photodiodes fill that gap, what separates PIN from APD architectures, and how to choose the right detector for your system.
Choosing a photodetector isn’t just a spec-matching exercise. The wrong choice drives redesign cycles, calibration overhead, and supplier risk that never appear on a datasheet. Here’s how to evaluate detectors the way your product’s lifecycle actually demands.