This process is typically used to remove paint, coatings and other surface material to create contrast without damaging the base material.
This process is commonly used to create permanent part marking. Etching is typically a very shallow surface removal to create contrast.
Laser engraving is technology based on the same procedural principle, laser-induced ablation through melting and/or evaporation of the substrate.
Laser annealing creates a permanent mark induced by heat without removing or compromising the material.