一种新型激光环形聚焦系统的研究

Annular Focus System of Laser Combined by a Spherical Lens and Two Mutually Complemented Axicons

本文首次计算了由会聚球面透镜、发散圆锥透镜和会聚圆锥透镜形成的激光环形聚焦光斑的光强分布、特征宽度和光能量集中分布,所得到的光场分布表达式很适合于进行数值计算.

AbstractIn the paper, an annular focus system of laser, combined by a convergent spherical lens and two axicons, one divergent and the other convergent, is proposed. This system can convert a disk-shaped laser beam into a ring-shaped one and allows continuous adjustment of focal ring diameter by varying the relative distance of axicons. This focusing system is well suited for the drilling of good-quality large diameter holes using a high power laser beam.