Common laser marking machines include CO2 laser marking machines, fiber laser marking machines, and green laser marking machines, UV laser marking machines have different principles because of their different uses and application ranges. CO2 Laser Marking Machine: CO2 gas is used to charge the discharge tube as a medium for generating laser light. A high voltage is applied to the electrode, and a glow discharge is generated in the discharge tube so that gas molecules are released from the laser and the laser energy is amplified to form a laser. The laser beam processed on the material. The fiber laser marking machine is made of erbium-doped double-clad fiber as the laser medium so that the high-power fiber laser can get the beam output close to the diffraction limit, and the fiber laser is used as the base film output. The spot diameter of the spot is 10 microns and then the computer controls the high speed. Scan galvanometer deflection changes the laser beam path to achieve automatic marking. Green laser marking machine: It adopts the most advanced laser pumping technology (side pump or end pump) with a wavelength of 532nm.
UV laser marking machine: It is developed with 355nm UV laser. The machine uses third-order cavity frequency multiplication technology compared with infrared laser. The 355UV light focusing spot is extremely small, which can greatly reduce the mechanical deformation of the material and Processing heat effect is small.