What components are used in Lidar technology?

• A. Gallium arsenide diodes
• B. Silicon sensors
• C. Germanium detectors
• D. Fiber optics

Answer: (A)

Lidar technology relies on specific components to function effectively, with gallium arsenide diodes being integral to this system. These diodes are semiconductor lasers that emit light in the near-infrared spectrum, which is essential for the operation of Lidar devices. The emitted light is pulsed, and when it hits a target, it is reflected back to the sensor. The time taken for the light to return helps in calculating distances, enabling speed measurements and the mapping of environments.

In the context of Lidar, gallium arsenide diodes are preferred due to their efficiency and ability to produce a coherent beam of light, which is crucial for precise measurements. Their performance characteristics make them well-suited for the application's requirements, thus positioning them as a core component of Lidar technology.