First-principles electron dynamics control simulation of diamond under femtosecond laser pulse train irradiation

被引:32
|
作者
Wang, Cong [1 ]
Jiang, Lan [1 ]
Wang, Feng [1 ]
Li, Xin [1 ]
Yuan, Yanping [1 ]
Xiao, Hai [2 ]
Tsai, Hai-Lung [3 ]
Lu, Yongfeng [4 ]
机构
[1] Beijing Inst Technol, Laser Micro Nano Fabricat Lab, Sch Mech Engn, Beijing 100081, Peoples R China
[2] Missouri Univ Sci & Technol, Dept Elect & Comp Engn, Rolla, MO 65409 USA
[3] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA
[4] Univ Nebraska, Dept Elect Engn, Lincoln, NE 68588 USA
基金
中国国家自然科学基金;
关键词
ABLATION; DIELECTRICS; IONIZATION;
D O I
10.1088/0953-8984/24/27/275801
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
A real-time and real-space time-dependent density functional is applied to simulate the nonlinear electron-photon interactions during shaped femtosecond laser pulse train ablation of diamond. Effects of the key pulse train parameters such as the pulse separation, spatial/temporal pulse energy distribution and pulse number per train on the electron excitation and energy absorption are discussed. The calculations show that photon-electron interactions and transient localized electron dynamics can be controlled including photon absorption, electron excitation, electron density, and free electron distribution by the ultrafast laser pulse train.
引用
收藏
页数:7
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