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.
Building multi-channel readout electronics can stall a photodiode program for months. The MCPR Development Kit from GPD Optoelectronics delivers 8-channel, ultra-low-noise performance out of the box, helping engineering teams cut design time, reduce integration risk and reach real data in minutes.
Read the blog post introducing our new What is a Photodiode? A Complete Guide covers operating modes, device types, key specifications, and material systems. Engineers new to detector selection will find a clear and practical starting point, along with links to relevant product pages and selection tools.
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.