gas lasers

Gas lasers are devices that generate laser light using gases as the medium for amplification. In these lasers, electrical energy excites gas molecules, promoting them to higher energy states. When these molecules return to their original state, they emit photons, which are particles of light. These photons bounce between mirrors within the laser, creating a focused beam of light. Common types of gas lasers include helium-neon lasers, often used for simple laser pointers and barcode scanners, and carbon dioxide lasers, which are used in cutting and welding applications. Their versatility and efficiency make them widely used in various fields.