Physical mechanisms of SiNx layer structuring with ultrafast lasers by direct and confined laser ablation

2015 ◽  
Vol 117 (10) ◽  
pp. 105304 ◽  
Author(s):  
S. Rapp ◽  
G. Heinrich ◽  
M. Wollgarten ◽  
H. P. Huber ◽  
M. Schmidt
Keyword(s):  
Laser Ablation ◽  
Ultrafast Lasers ◽  
Physical Mechanisms ◽  
Sinx Layer

scholarly journals Physical mechanisms of pulsed infrared laser ablation of biological tissues

1998 ◽  
Author(s):  
Andrew D. Yablon ◽  
Norman S. Nishioka ◽  
B. B. Mikic ◽  
Vasan Venugopalan
Keyword(s):  
Laser Ablation ◽  
Biological Tissues ◽  
Infrared Laser ◽  
Physical Mechanisms

Molecular Dynamics Simulation of Ultrafast Laser Ablation of Fused Silica

2006 ◽  
Author(s):  
Changrui Cheng ◽  
Xianfan Xu ◽  
Yaguo Wang ◽  
Alejandro Strachan
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Ultrafast Lasers ◽  
Laser Energy ◽  
Laser Pulses ◽  
Fused Silica ◽  
Ultrafast Laser ◽  
Dynamics Simulation ◽  
Free Electrons ◽  
Ultrafast Laser Ablation

In recent decades, ultrafast lasers have been used successfully to micro-machine fused silica. The high intensity laser pulses first excite valence electrons to the conduction band via photoionization and avalanche ionization. The excited free electrons absorb laser energy, and transfer its energy to the ions, resulting in the temperature rise. This ionization leads to significant changes in Coulomb forces among the atoms. Both thermal and non-thermal (Coulomb explosion) ablation processes have been discussed in the literature [1]. This work applies molecular dynamics technique to study the interaction between ultrafast laser pulses and fused silica and the resulting ablation. The main goal of this work is to investigate the ultrafast laser ablation process of fused silica, and to reveal the mechanisms leading to the material's removal. In this MD simulation, the equilibrium state of fused silica is first established at 300 K, and the laser heating and material removal processes are simulated. The ionization of the material and the energy coupling between the laser beam and free electrons and ions are considered. Thermal and non-thermal mechanisms of fused silica ablation are discussed based on calculation results.

Laser Ablation and Local Deposition: Physical Mechanisms and Application for Decontamination of Radioactive Surfaces

2007 ◽  
Vol 51 (91) ◽  
pp. 345 ◽  
Author(s):  
V. P. Veiko ◽  
E. A. Shakhno ◽  
V. N. Smirnov ◽  
G. D. Nikishin ◽  
S. P. Rho
Keyword(s):  
Laser Ablation ◽  
Physical Mechanisms ◽  
Local Deposition

scholarly journals Physical Mechanisms during fs Laser Ablation of Thin SiO2 Films

2013 ◽  
Vol 41 ◽  
pp. 734-740 ◽  
Author(s):  
S. Rapp ◽  
M. Domke ◽  
M. Schmidt ◽  
H.P. Huber
Keyword(s):  
Laser Ablation ◽  
Sio2 Films ◽  
Physical Mechanisms ◽  
Fs Laser
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