Ablation enhancement of metal in ultrashort double-pulse experiments
Ablation enhancement of metal in ultrashort double-pulse experiments
复制标题
超短双脉冲实验中金属的烧蚀增强
DOI：
10.1063/1.5030757
复制
发表时间：
2018-06
影响因子：
4
通讯作者：
Yongfeng Lu
中科院分区：
文献类型：
--
作者：
Kaihu Zhang;Jiabo Zhang;Lan Jiang;Xin Li;Yan Liu;Bo Li;Yongfeng Lu
我们报告的烧蚀增强（加深和扩大烧蚀轮廓）镍超短双脉冲激光照射，一个例外的典型减少趋势观察到的金属烧蚀率与双脉冲激发照射。在脉冲间隔（τs）约为4 ps时达到最大值，在τs增加到约为电子-晶格能量弛豫时间之前观察到增强。通过将能量远低于单脉冲消融阈值的弱脉冲时间整形为两个相当弱的脉冲，证明了消融的成就。有人提出，增强的电子-声子耦合和电子热导率的下降，这两者都是由于电子温度的降低（通过脉冲整形），共同有助于扩大烧蚀轮廓，而前者是负责加深。本文提出了一种超短激光加工镍的烧蚀增强方法。
We report an ablation enhancement (both deepening and widening in ablation profiles) on nickel by ultrashort double-pulse laser irradiation, an exception of the typical reduction trend observed in ablation rates for metals irradiated with double-pulse excitations. Maximized at a pulse-separation (τs) of approximately 4 ps, the enhancement was observed before τs was increased to approximately the electron-lattice energy relaxation time. An achievement of ablation, by temporal shaping a weak pulse with energy well below the single-pulse ablation threshold into two considerably weaker pulses, was demonstrated. It is proposed that the enhanced electron-phonon coupling and drop of electronic heat conductivity, both of which result from the reductions in electron temperature (by pulse shaping), co-contribute to the widening in ablation profiles, while the former one is responsible for the deepening. This letter proposed an ablation enhancement approach to ultrashort laser processing of nickel.
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影响因子：
4
作者：
S. Noël;J. Hermann
通讯作者：
S. Noël;J. Hermann
影响因子：
3.7
作者：
Bonn, M;Denzler, DN;Hohlfeld, J
通讯作者：
Hohlfeld, J
DOI：
10.1007/s00339-016-0169-6
发表时间：
2016-06
期刊：
Applied Physics A
影响因子：
--
作者：
J. Schille;L. Schneider;S. Kraft;L. Hartwig;U. Loeschner
通讯作者：
J. Schille;L. Schneider;S. Kraft;L. Hartwig;U. Loeschner
影响因子：
--
作者：
Jiang, L;Tsai, HL
通讯作者：
Tsai, HL
影响因子：
3.6
作者：
LIU, JM
通讯作者：
LIU, JM