北京工业大学研发的“大功率激光三维制造技术”通过了专家鉴定。专家认为，该项研究成果达到了国际领先水平。该成果包括： 　　1.在国际上首次提出基于附加相移的大功率 CO2混合模激光光束传输与聚焦理论，可计算大功率 CO2激光光束横截面能量分布的变化、光束的光学参数、焦 Beijing University of Technology developed “high-power laser three-dimensional manufacturing technology,” passed the expert identification. Experts believe that the research results reached the international advanced level. The results include: 1. In the world for the first time proposed high-power CO2 hybrid laser beam propagation and focusing theory based on additional phase shift can be calculated high-power CO2 laser beam cross-section energy distribution changes, the optical parameters of the beam, the focus