激光加工中光束变换技术研究  

Beam transformation in laser processing

作　　者：叶瑞芳[1] 黄元庆[1] 万瑾[1] 胡天林[1] 吴兆喜[1] 颜黄苹[1] 翁梓华[1] 

机构地区：[1]厦门大学机电工程系,福建厦门361005

出　　处：《红外与激光工程》2007年第z1期629-631,共3页Infrared and Laser Engineering

基　　金：福建省科学技术厅资助项目(2005HZ1020)

摘　　要：激光光束形状和能量分布直接限定了激光加工的应用。为满足不同的激光加工要求,必须对激光光束进行光束变换。应用旋转棱镜和组合光学系统能够实现实心和环状光束之间的相互变换。从几何光学角度对旋转棱镜组合光学系统进行了理论分析和实验。通过调整正负旋转棱镜的间距d,获取不同形状和能量分布的激光光束。实验结果表明,基于旋转棱镜组合光学系统的光束变换技术,有效地实现了多种形式的光束变换,提高了激光束的利用率,在激光加工领域中具有广泛的应用前景。The shape and quality of laser beam directly define its applications in the laser processing.For different requests of laser processing,the input beam always needs to be transformed.The transformation between the solid beam and annular beam can be realized by the axicon-based optical devices.The optical system is analyzed based on the geometry optical theory.By adjusting the separation of the positive and negative axicon,different shapes and the energy distributions are gained.It is shown that the axicon-based beam transformations raise the use factor of laser and have wide application prospect in laser processing field.

关 键 词：光束变换 旋转棱镜 激光加工 

分 类 号：TN241[电子电信—物理电子学]