Theoretical analysis of a quasi-Bessel beam for laser ablation  

作　　者：Pinghui Wu Chenghua Sui Wenhua Huang 

机构地区：[1]State Key Laboratory of Modern Optical Instrumentation,Department of Optical Engineering,Zhejiang University,Hangzhou 310027,China [2]Department of Applied Physics,Zhejiang University of Technology,Hangzhou 310023,China [3]Department of Physics,Huzhou University,Huzhou 313000,China

出　　处：《Photonics Research》2014年第3期82-86,共5页光子学研究（英文版）

基　　金：The authors thank the financial support from the National Natural Science Foundation of China(No.11272120).

摘　　要：A quasi-Bessel beam(QBB)is suitable for laser ablation because it possesses a micrometer-sized focal spot and long depth of focus simultaneously.In this paper,the characterizations of QBBs formed by the ideal axicon and oblate-tip axicon are described.Strong on-axis intensity oscillations occur due to interference between the QBB and the refracted beam by the oblate tip.Using the axicon for laser ablation was theoretically investigated.Simple analytical formulas can be used to predict the required laser parameters,including the laser pulse energy,the generated fluence distributions,and the beam diameters.

关 键 词：LASER BEAM BESSEL 

分 类 号：TN2[电子电信—物理电子学]