Carbon dioxide laser is a type of gas laser that uses carbon dioxide as laser beam production. Due to its high output power and the ability to cut thick materials, it is usually used in industrial and medical applications. The laser works by exciting carbon dioxide molecules, causing them to emit photons in a process called stimulated emission.

In this process, a beam of coherent light is created, which can be focused to a very small point, and provides the possibility of accurate cutting and welding. In medicine, the carbon dioxide laser is often used for skin resurfacing, Genital wart treatment #8e5fb3;"> and removal of tumors is used. Its application in industry includes cutting and engraving plastic, metals and other materials.

Despite its usefulness, the carbon dioxide laser also has safety risks due to its high output power and the possibility of accidental eye or skin exposure.