Laser etching, or laser marking, refers to the use of lasers to engrave an object. In this process, a highly focused laser is directed onto a specific point or pattern in the object of interest, thereby using the energy from the laser to create very accurate and controlled markings on the object. Lasers can typically focus on a very small area – about a fraction of the millimetre – while keeping the surrounding area unaffected. The markings are the result of the laser’s energy vaporising the material or causing the material to fracture and flake off the surface.