A laser engraving machine is a device that uses a high - energy laser beam to mark, engrave, or cut a wide variety of materials. The laser beam is focused onto the surface of the material, where it either removes material through vaporization or causes a chemical change to create a visible mark. It can work with materials such as wood, plastic, metal, glass, and leather, enabling the creation of detailed designs, text, or patterns.
The development of laser engraving machines is closely related to the discovery and application of lasers. Lasers were first developed in the 1960s, and it didn't take long for their potential in engraving and marking applications to be explored. Early laser engraving systems were large, expensive, and had limited capabilities. Over the years, with advancements in laser technology, computer - aided design (CAD), and manufacturing processes, laser engraving machines have become more compact, powerful, and affordable. They have found widespread use in industries such as jewelry, signage, electronics, and custom - manufacturing.
Laser engraving machines operate based on the principle of laser - material interaction. A laser source emits a concentrated beam of light that is focused onto the material's surface through a lens system. The high - energy photons in the laser beam interact with the material's atoms. Depending on the material and the laser's power, the interaction can cause the material to heat up rapidly and vaporize, leaving a mark or groove. In some cases, the laser energy can also cause a chemical reaction on the material's surface, such as changing the color of a metal or polymer through oxidation or other chemical processes.