Position-Sensing Photodiodes (PSDs) are specialized detectors that output electrical signals proportional to the location of a light spot on their active surface, enabling continuous, high-resolution position measurement without the pixel structure of an imaging array. They are used in laser beam tracking, optical alignment, displacement measurement, and auto-focus systems. GPD manufactures high-quality PSDs optimized for linearity, low noise, and fast response, supporting precision alignment and tracking applications in industrial automation, optical instruments, and defense systems requiring accurate real-time beam position feedback.
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.