... light pass through Nd3+:YAG crystal, exciting ND3+:YAG laser, then the laser light pass through resonant cavity, forms a beam of ... of 1064nm, After amplification, reflection, transmission and other processes, the laser is projected to the object surfaces that need for welding ... SCM, PLC or industrial PC. By adjusting the frequency or pulse width, the energy of the laser beam can be changed. Principle ...