Detector Responsivity quantifies how efficiently a photodetector converts incident optical power into electrical current, typically expressed in amperes per watt (A/W). It is a wavelength-dependent parameter that reflects the detector’s quantum efficiency and any internal gain mechanisms. GPD characterizes responsivity across the full operating spectrum for each detector product, ensuring customers can accurately predict system sensitivity and signal levels. High responsivity is especially critical in low-light applications like spectroscopy, LiDAR, and free-space optical communications.
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.