Photon detection

Photon detection involves capturing light particles, called photons, and converting their energy into an electrical signal. Devices like photodetectors or photodiodes are sensitive to these tiny packets of light. When a photon hits the detector, it causes a small electrical change, which is then processed to measure the light's presence, intensity, or other properties. This process is fundamental in applications like cameras, scientific instruments, and fiber optic communications, enabling precise measurement and analysis of light at very low levels or across different wavelengths.