激光具有很多优异的光学特性,如高方向性、高亮度、高单色性以及高相干性等,在机械加工领域,激光已经可以完成如激光雕刻、切削、焊接、打孔、激光热处理(淬火)和激光测量等加工,已经占据了不可替代的地位。激光加工优势彰显相比用传统加工手段,激光加工的效率明显提高,如对航空发动机叶片和燃烧室成千上万个形状各异的孔的3D加工,比传统EDM加工效率至少提高5～8 Laser has many excellent optical properties, such as high directivity, high brightness, high monochromaticity and high coherence. In the field of mechanical processing, lasers can already be used for laser engraving, cutting, welding, drilling, laser heat treatment ) And laser surveying and other processing, has occupied an irreplaceable position. Compared with the traditional processing methods laser processing efficiency significantly improved, such as the aeroengine blades and the combustion chamber of thousands of different shapes of the hole 3D processing, EDM processing efficiency than the traditional increase of at least 5 to 8