scholarly journals Influence of an Angular Hatching Exposure Strategy on the Surface Roughness During Picosecond Laser Ablation of Hard Materials

2016 ◽  
Vol 83 ◽  
pp. 135-146 ◽  
Author(s):  
Christian Daniel ◽  
Jannik Manderla ◽  
Sina Hallmann ◽  
Claus Emmelmann
Keyword(s):  
Surface Roughness ◽  
Laser Ablation ◽  
Picosecond Laser ◽  
Hard Materials

High-Throughput Picosecond Laser Machining of Aerospace Nickel Superalloy

2021 ◽  
pp. 095440542110288
Author(s):  
Sundar Marimuthu ◽  
Bethan Smith
Keyword(s):  
Surface Roughness ◽  
Material Removal Rate ◽  
Material Removal ◽  
Thermal Damage ◽  
Removal Rate ◽  
Picosecond Laser ◽  
Nickel Superalloy ◽  
Laser Machining ◽  
Process Conditions ◽  
Machining Performance

This manuscript discusses the experimental results on 300 W picosecond laser machining of aerospace-grade nickel superalloy. The effect of the laser’s energetic and beam scanning parameters on the machining performance has been studied in detail. The machining performance has been investigated in terms of surface roughness, sub-surface thermal damage, and material removal rate. At optimal process conditions, a picosecond laser with an average power output of 300 W can be used to achieve a material removal rate (MRR) of ∼140 mm3/min, with thermal damage less than 20 µm. Shorter laser pulse widths increase the material removal rate and reduce the resultant surface roughness. High scanning speeds improve the picosecond laser machining performance. Edge wall taper of ∼10° was observed over all the picosecond laser machined slots. The investigation demonstrates that high-power picosecond lasers can be used for the macro-machining of industrial components at an acceptable speed and quality.

Nanoscale evaluation of surface roughness of metal films prepared by laser ablation

1998 ◽  
Vol 66 (7) ◽  
pp. S815-S818 ◽  
Author(s):  
T. Sumomogi ◽  
H. Sakai ◽  
M. Nakata ◽  
T. Endo
Keyword(s):  
Surface Roughness ◽  
Laser Ablation ◽  
Metal Films

scholarly journals Studies on linear, nonlinear optical and excited state dynamics of silicon nanoparticles prepared by picosecond laser ablation

AIP Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 127127 ◽  
Author(s):  
Syed Hamad ◽  
G. Krishna Podagatlapalli ◽  
R. Mounika ◽  
S. V. S. Nageswara Rao ◽  
A. P. Pathak ◽  
...  
Keyword(s):  
Excited State ◽  
Laser Ablation ◽  
Nonlinear Optical ◽  
Silicon Nanoparticles ◽  
Picosecond Laser ◽  
Excited State Dynamics

Characterization of Enamel and Dentin Response to Nd:YAG Picosecond Laser Ablation

1999 ◽  
Vol 17 (3) ◽  
pp. 127-131 ◽  
Author(s):  
R.F.Z. LIZARELLI ◽  
C. KURACHI ◽  
L. MISOGUTI ◽  
V.S. BAGNATO
Keyword(s):  
Laser Ablation ◽  
Picosecond Laser

Research on Rear Surface Damage in Picosecond Laser Ablation of K9 Glass

2017 ◽  
Vol 44 (1) ◽  
pp. 0102015 ◽  
Author(s):  
郝艳飞 Hao Yanfei ◽  
孙明营 Sun Mingying ◽  
时双 Shi Shuang ◽  
潘雪 Pan Xue ◽  
朱健强 Zhu Jianqiang
Keyword(s):  
Laser Ablation ◽  
Rear Surface ◽  
Picosecond Laser ◽  
Surface Damage ◽  
K9 Glass
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