LASER (Light Amplification by Stimulated Emission of Radiation)

A laser is a device that produces a highly focused, intense beam of light through a process called stimulated emission. Inside, atoms are energized (housed in a gain medium), causing them to emit light photons. When a photon interacts with excited atoms, it triggers them to release more identical photons, amplifying the light. This light is then reflected between mirrors, increasing its coherence, direction, and strength. The result is a precise, powerful beam of light used in various applications, from medical treatments to communication and manufacturing, characterized by its monochromatic, collimated, and intense properties.