Corrigendum to “Orthogonal double-pulse versus single-pulse laser ablation at different air pressures: A comparison of the mass removal mechanisms” [Spectrochim. Acta Part B 64 (2009) 29–34]

2009 ◽  
Vol 64 (9) ◽  
pp. 928
Author(s):  
Gabriele Cristoforetti
1999 ◽  
Vol 69 (7) ◽  
pp. S887-S894 ◽  
Author(s):  
R.E. Russo ◽  
X.L. Mao ◽  
H.C. Liu ◽  
J.H. Yoo ◽  
S.S. Mao

Author(s):  
Ze Liu ◽  
Benxin Wu ◽  
Rong Xu ◽  
Kejie Zhao ◽  
Yung C. Shin

Previous investigations on “double-pulse” nanosecond (ns) laser drilling reported in the literature typically utilize double pulses of equal or similar pulse energies. In this paper, “double-pulse” ns laser drilling using double pulses with energies differing by more than ten times has been studied, where both postprocess workpiece characterizations and in situ time-resolved shadowgraph imaging observations have been performed. A very interesting physical phenomenon has been discovered under the studied conditions: the “double-pulse” ns laser ablation process, where the low-energy pulse precedes the high-energy pulse (called “low-high double-pulse” laser ablation) by a suitable amount of time, can produce significantly higher ablation rates than “high-low double-pulse” or “single-pulse” laser ablation under a similar laser energy input. In particular, “low-high double-pulse” laser ablation at a suitable interpulse separation time can drill through a ∼0.93 mm thick aluminum 7075 workpiece in less than 200 pulse pairs, while “high-low double-pulse” or “single-pulse” laser ablation cannot drill through the workpiece even using 1000 pulse pairs or pulses, respectively. This indicates that “low-high double-pulse” laser ablation has led to a significantly enhanced average ablation rate that is more than five times those for “single-pulse” or “high-low double-pulse” laser ablation. The fundamental physical mechanism for the ablation rate enhancement has been discussed, and a hypothesized explanation has been given.


2013 ◽  
Vol 8 (02) ◽  
pp. P02007-P02007 ◽  
Author(s):  
V Chaudhari ◽  
K Patel ◽  
A Srivastava ◽  
V Sivakumaran ◽  
R K Singh ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document