What is the working principle of fiber laser marking machine?

The fiber laser marking machine uses ytterbium-doped double-clad fiber as the laser medium, so that the high-power fiber laser can obtain a beam output close to the diffraction limit. The fiber laser is used as the base film output. The focused spot diameter is 10 microns and is controlled by a computer at high speed. The deflection of the scanning galvanometer changes the optical path of the laser beam to achieve automatic marking. Laser marking is force-free and non-contact, and has almost no impact on the quality of the product. After marking, the texture of the fonts will be stronger.