Streak-photographic investigation of shock wave emission after laser-induced plasma formation in water

1995 ◽  
Author(s):  
Joachim Noack ◽  
Alfred Vogel
Keyword(s):  
Shock Wave ◽  
Plasma Formation ◽  
Laser Induced Plasma ◽  
Wave Emission

Deburring Effect of Plasma Produced by Nanosecond Laser Ablation

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
Yun Zhou ◽  
Yibo Gao ◽  
Benxin Wu ◽  
Sha Tao ◽  
Ze Liu
Keyword(s):  
Shock Wave ◽  
Laser Ablation ◽  
High Spatial Resolution ◽  
Shape Change ◽  
The Other ◽  
Nanosecond Laser ◽  
Laser Induced Plasma ◽  
Nanosecond Laser Ablation ◽  
Mechanical Breaking ◽  
The Sacrifice

This paper presents an interesting nanosecond (ns) laser-induced plasma deburring (LPD) effect (from microchannel sidewalls) discovered by the authors, which has been rarely reported before in the literature. Fast imagining study has been performed on plasma produced by ns laser ablation of the bottom of microchannels. It has been found that the plasma can effectively remove burrs from the sidewall of the channels, while on the other hand microscopic images taken in this study did not show any obvious size or shape change of the channel sidewall after LPD. LPD using a sacrifice plate has also been studied, where the plasma for deburring is generated by laser ablation of the sacrifice plate instead of the workpiece. The observed laser-induced plasma deburring effect has several potential advantages in practical micromanufacturing applications, such as high spatial resolution, noncontact and no tool wear, and less possibility of damaging or overmachining useful microfeatures when removing burrs from them. The fundamental mechanisms for the observed laser-induced plasma deburring effect still require lots of further work to completely understand, which may include mechanical breaking of burrs due to high kinetic energies carried by plasma and the associated shock wave, and/or thermal transport from plasma to burrs that may cause their heating and phase change, or other mechanisms.

scholarly journals Photoacoustic shock wave emission and cavitation from structured optical fiber tips

2016 ◽  
Vol 108 (2) ◽  
pp. 024101 ◽  
Author(s):  
M. Mohammadzadeh ◽  
S. R. Gonzalez-Avila ◽  
Y. C. Wan ◽  
X. Wang ◽  
H. Zheng ◽  
...  
Keyword(s):  
Shock Wave ◽  
Optical Fiber ◽  
Wave Emission

Shock wave emission during the collapse of cavitation bubbles

Shock Waves ◽  
2016 ◽  
Vol 26 (4) ◽  
pp. 385-394 ◽  
Author(s):  
W. Garen ◽  
F. Hegedűs ◽  
Y. Kai ◽  
S. Koch ◽  
B. Meyerer ◽  
...  
Keyword(s):  
Shock Wave ◽  
Cavitation Bubbles ◽  
Wave Emission

Laser induced plasma formation by picosecond pulse irradiation

1993 ◽  
Vol 69 (1-4) ◽  
pp. 290-298 ◽  
Author(s):  
W. Marine ◽  
M. Gerri ◽  
P. Thomsen-Schmidt ◽  
J.M. Scotto d'Aniello
Keyword(s):  
Picosecond Pulse ◽  
Plasma Formation ◽  
Pulse Irradiation ◽  
Laser Induced Plasma
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