Investigation of laser damage of materials assisted by DC spark discharge

This paper introduces the physical mechanism of laser damage of metal materials and isolation materials,assisted by the DC spark discharge,and discusses the relation of DC spark discharge factors and the laser parameters,effecting on the laser cutting and laser drilling.A experimental setup is established to analysis the electrode arrangement and spark factors and to fined the optimum match of DC discharge factors and laser parameters.The experiment results show that the quality of laser cutting and laser drilling with DC spark discharge will considerably improve and the technique can be widely used in laser processing.