CO2 lasers are a type of gas laser that use carbon dioxide as the active medium to produce laser light. They emit infrared radiation at a wavelength of 10.6 micrometers, which is highly effective for cutting and engraving materials like wood, plastic, and metal. These lasers are commonly used in industrial applications, medical procedures, and research. The design of a CO2 laser typically includes a gas-filled tube, mirrors, and a power source. When electricity excites the gas molecules, they emit photons, which are amplified and directed to create a focused beam. This technology is valued for its precision and efficiency in various fields.