INTERNAL GLASS MARKING

This method focuses a laser’s energy into the interior of a glass part—creating microfractures and a visually contrasting mark without affecting the outside surface. Internal glass marking uses 355-nm (Nd:YVO4) or ultrashort lasers. Their small spot sizes have high energy density and absorption rates that can mark precise locations within the glass. By changing the Z height and scanning in the X and Y axes, you can even mark 3D graphics inside the glass. Decorative glass marking is the most popular application for internal glass marking.