First-principles electron dynamics control simulation of diamond under femtosecond laser pulse train irradiation.
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.
Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
Cong
C
Wang
Lan
L
Jiang
Feng
F
Wang
Xin
X
Li
Yanping
Y
Yuan
Hai
H
Xiao
Hai-Lung
HL
Tsai
Yongfeng
Y
Lu
D000042:Absorption; D018130:Diamond / Q000737:chemistry* / Q000528:radiation effects*; D004583:Electrons; D007834:Lasers; D008027:Light; D056004:Molecular Dynamics Simulation; D017785:Photons; D011789:Quantum Theory; D013997:Time Factors
D018130:Diamond