As proved by experiment, the accuracy and the stability of laser drilling are better than those of the common focusing of the light cone.
试验证明，激光打孔的精度和稳定性优于一般光锥聚焦法打孔。
2
The influence of by different cone angles of the axicon and the different topological number of the vortex beam on the focusing properties of vortex beam is investigated.