Critical pulse in multi-shot femtosecond laser ablation on metallic surfaces

doi:10.1088/1361-6528/ad2bcf

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Critical pulse in multi-shot femtosecond laser ablation on metallic surfaces
	Wang, Pengjie 4,5; Kong, Xiangguang 4,5; Qi, Fugong 4,5; Zhou, Jiyu 4,5; Ding, Haimin 4,5; Peng Q(彭庆)1,2,3
刊名	NANOTECHNOLOGY
	2024-05-20
卷号	35 期号:21 页码:10
关键词	heat-intensified effect recast accumulation laser ablation mechanisms femtosecond laser surface modification
ISSN号	0957-4484
DOI	10.1088/1361-6528/ad2bcf
通讯作者	Wang, Pengjie(pjwang@ncepu.edu.cn)
英文摘要	Thermal effect remains a thorny issue for femtosecond-laser surface engineering and nanostructuring on metallic targets with high pulse energies or high repetition rates, which needs to be paid adequate attentions. Herein, we have experimentally investigated the heat diffusion and accumulations during single-shot and multi-shot femtosecond laser ablation on metallic surfaces. We have for the first time observed a novel phenomenon that the thermal effect was intensified abruptly when the laser-pulse number goes over a threshold (approximately between 10 and 20 for aluminum alloy with laser fluence of 6 J cm-2), accompanied with a dramatic reduction of ablated depth and complicated plasma dynamics. Based on both optical and thermodynamic analysis, we introduced a defocusing-dominated plasma-assistant model for this abnormal thermal effect. This work explored the critical experimental parameters for femtosecond-laser surface modification and processing in micro-scale engineering applications.
分类号	二类
资助项目	National Natural Science Foundation of China https://doi.org/10.13039/501100001809[2023MS133] ; Fundamental Research Funds for the Central Universities[12272378] ; National Natural Science Foundation of China[2232065] ; Natural Science Foundation of Beijing[E2022502011] ; Natural Science Foundation of Beijing[E2022502004] ; Natural Science Foundation of Hebei Province[2020B0909010003] ; High-level Innovation Research Institute Program of Guangdong Province[E1Z1011001] ; Chinese Academy of Sciences
WOS关键词	HEAT ACCUMULATION ; VACUUM
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:001180421800001
资助机构	National Natural Science Foundation of China https://doi.org/10.13039/501100001809 ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; Natural Science Foundation of Beijing ; Natural Science Foundation of Hebei Province ; High-level Innovation Research Institute Program of Guangdong Province ; Chinese Academy of Sciences
其他责任者	Wang, Pengjie
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94759]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Guangdong Aerosp Res Acad, Guangzhou, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China; 3.Inst Mech, Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.North China Elect Power Univ, Hebei Engn Res Ctr Adv Mfg & Intelligent Operat &, Baoding 071003, Peoples R China; 5.North China Elect Power Univ, Baoding 071000, Peoples R China;
推荐引用方式 GB/T 7714	Wang, Pengjie,Kong, Xiangguang,Qi, Fugong,et al. Critical pulse in multi-shot femtosecond laser ablation on metallic surfaces[J]. NANOTECHNOLOGY,2024,35(21):10.
APA	Wang, Pengjie,Kong, Xiangguang,Qi, Fugong,Zhou, Jiyu,Ding, Haimin,&彭庆.(2024).Critical pulse in multi-shot femtosecond laser ablation on metallic surfaces.NANOTECHNOLOGY,35(21),10.
MLA	Wang, Pengjie,et al."Critical pulse in multi-shot femtosecond laser ablation on metallic surfaces".NANOTECHNOLOGY 35.21(2024):10.