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 laser is widely used in various applications, including industrial cutting, engraving, and medical procedures due to its efficiency and precision. The CO2 laser operates by exciting the gas mixture, which usually includes nitrogen and helium, to produce laser light. Its ability to cut through materials like metal, wood, and plastic makes it a popular choice in manufacturing. Additionally, it is used in dermatology for skin resurfacing and surgical procedures.