光学
材料科学
激光器
激光烧蚀
烧蚀
梁(结构)
激光束
电场
撞击坑
光电子学
物理
天文
量子力学
工程类
航空航天工程
作者
Yuichi Kozawa,Masaki Sato,Yuuki Uesugi,Shunichi Sato
出处
期刊:Optics Letters
[The Optical Society]
日期:2020-11-11
卷期号:45 (22): 6234-6234
被引量:21
摘要
Tight focusing of a radially polarized beam is used for single-shot laser ablation of metals. The strong longitudinal field is generated at the focus, and its contribution to the ablation process is comprehensively examined for various metal materials. In the presence of the longitudinal field at the focus, a fabricated crater at the surface exhibits either a spot shape or a doughnut shape, depending on the material. The experimental results indicate that the strong longitudinal electric field on metal surfaces is capable of promoting material removal, which may provide a novel processing scheme in ultrafast laser microprocessing with enhanced spatial resolution.
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