Laser etching is a process that creates marks on parts and products by melting their surface. It is part of the broader category called laser marking which also includes laser engraving and laser annealing. Highly versatile, it can be used with most metals.
To produce a raised mark, the laser beam delivers a high amount of energy to a small area. As a result, the surface of the material melts and expands. This can color the material in black, white or gray.