Dark Current is the small electric current that flows through a photodetector even in the complete absence of incident light, arising from thermally generated electron-hole pairs within the semiconductor material. It sets a fundamental noise floor that limits detector sensitivity, particularly at longer wavelengths and elevated temperatures. GPD optimizes material quality, device geometry, and surface passivation techniques to minimize dark current, enabling superior signal-to-noise performance in low-light scientific, industrial, and defense 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.
Introducing our new interactive Photodetector Selector! Engineers can now navigate detector types, key specs, and real-world trade-offs with confidence. From LiDAR to telecom to spectroscopy, find the right photodetector for your application fast.