Innovative photodetector for LIDAR systems

Optical imaging systems are widely used in the drone industry (optical navigation, terrain scanners), industry (distance measurement, 3D visualization), security (optical scanners and motion sensors), robotics (motion sensors, terrain or field scanning), etc. Lidar (Light Detection and Ranging) systems have a different structure depending on their purpose, and the principle of operation is based on measuring the time difference between the emission time of a laser or other light source and the time of its reflection from the object, where the reflected photons fall on the photodetector. This time interval is about hundreds of ps. Accuracy, photography speed and system efficiency depend on the performance of the photodetector module. Modern development of high technologies; the new efficiency of detecting a large photon flux makes it possible to develop photodetectors with a nanolayer micropixel structure. The paper presents the development of a modern and highly sensitive micropixel avalanche photodetector. The developed photodetector have high speed, low noise and high resolution. The improvement of these parameters allows the developed photodetectors to become an indispensable component of lidar systems.

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