During laser engraving, the workpiece surface us removed by melting and evaporation with a laser beam. Consequently, the laser beam removes the material which leaves a depression on the surface. The laser beam moves horizontally along the individual lines of the engraving, and the material is being removed point by point, line by line. This processing method is called grid engraving.
You can engrave surfaces or shapes with many designs including photos, pictures, logos, inlays, fine to thick lettering, and stamps, to name a few.
More about the precise process of raster engraving