Photodetector

A photodetector is a device that detects light and converts it into an electrical signal. It works by absorbing incoming light photons, which generate electrical charges within the device. These charges are then processed to produce an electrical current or voltage that corresponds to the intensity and sometimes the type of light. Photodetectors are essential in various applications such as cameras, optical communication, medical imaging, and scientific instruments, enabling precise measurement and analysis of light signals for different technological purposes.