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Modeling of ablation threshold dependence on pulse duration for dielectrics with ultrashort pulsed laser
Sun, Mingying; Zhu, Jianqiang; Lin, Zunqi; sunmy@siom.ac.cn
2017
Source PublicationOpt. Eng.
Volume56Issue:1
AbstractWe present a numerical model of plasma formation in ultrafast laser ablation on the dielectrics surface. Ablation threshold dependence on pulse duration is predicted with the model and the numerical results for water agrees well with the experimental data for pulse duration from 140 fs to 10 ps. Influences of parameters and approximations of photo- and avalanche-ionization on the ablation threshold prediction are analyzed in detail for various pulse lengths. The calculated ablation threshold is strongly dependent on electron collision time for all the pulse durations. The complete photoionization model is preferred for pulses shorter than 1 ps rather than the multiphoton ionization approximations. The transition time of inverse bremsstrahlung absorption needs to be considered when pulses are shorter than 5 ps and it can also ensure the avalanche ionization (AI) coefficient consistent with that in multiple rate equations (MREs) for pulses shorter than 300 fs. The threshold electron density for AI is only crucial for longer pulses. It is reasonable to ignore the recombination loss for pulses shorter than 100 fs. In addition to thermal transport and hydrodynamics, neglecting the threshold density for AI and recombination could also contribute to the disagreements between the numerical and the experimental results for longer pulses. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
SubtypeArticle
Department联合
DOI10.1117/1.OE.56.1.011026
Funding OrganizationOpen Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040]
Indexed BySCI
Funding OrganizationOpen Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040] ; Open Research Fund of State Key Laboratory of Pulsed Power Laser Technology, Electronic Engineering Institute [SKL2014KF05]; Fund of Key Laboratory of High Power Laser and Physics, Chinese Academy of Sciences [CXJJ-16S040]
WOS IDWOS:000396389400029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.siom.ac.cn/handle/181231/27972
Collection高功率激光物理国家实验室
Corresponding Authorsunmy@siom.ac.cn
Affiliation中国科学院上海光学精密机械研究所
Recommended Citation
GB/T 7714
Sun, Mingying,Zhu, Jianqiang,Lin, Zunqi,et al. Modeling of ablation threshold dependence on pulse duration for dielectrics with ultrashort pulsed laser[J]. Opt. Eng.,2017,56(1).
APA Sun, Mingying,Zhu, Jianqiang,Lin, Zunqi,&sunmy@siom.ac.cn.(2017).Modeling of ablation threshold dependence on pulse duration for dielectrics with ultrashort pulsed laser.Opt. Eng.,56(1).
MLA Sun, Mingying,et al."Modeling of ablation threshold dependence on pulse duration for dielectrics with ultrashort pulsed laser".Opt. Eng. 56.1(2017).
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