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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。
Laser beam shape and energy distribution directly define the application of laser processing. To meet different laser processing requirements, the laser beam must be beam-transformed. The application of a rotating prism and a combined optical system enables mutual transformation between solid and annular beams. From the perspective of geometrical optics, the theory and experiment of rotating prism assembly optical system are analyzed. By adjusting the distance d between the positive and negative rotating prisms, laser beams of different shapes and energy distributions are obtained. The experimental results show that the beam transformation technology based on the rotating prism combined optical system can effectively realize many kinds of beam transformation and improve the utilization ratio of the laser beam. It has wide application prospect in the field of laser processing.