A CO2 laser is a type of gas laser that uses carbon dioxide as its active medium. It produces a high-intensity beam of infrared light, typically at a wavelength of 10.6 micrometers. This wavelength is well-absorbed by many materials, making CO2 lasers effective for cutting, engraving, and welding various substances, especially metals and plastics. These lasers are commonly used in industrial applications, medical procedures, and research. The CO2 laser is known for its efficiency and ability to deliver precise energy, which allows for clean cuts and minimal thermal damage to surrounding materials.