Protection of laser power meters when used with pulsed laser beams of moderate waist and high peak‐power

1990 ◽  
Vol 61 (3) ◽  
pp. 1161-1162
Author(s):  
H. Damany
Optik ◽  
2017 ◽  
Vol 140 ◽  
pp. 248-252 ◽  
Author(s):  
Lei Li ◽  
Maoyong Cao ◽  
Shande Liu ◽  
Yandong Peng ◽  
Lihe Zheng ◽  
...  

2008 ◽  
Author(s):  
Xing-hai Zhao ◽  
Yang Gao ◽  
Wen-yong Cheng ◽  
Yong-sheng Cheng ◽  
Wei Su

2014 ◽  
Vol 20 (4) ◽  
pp. 328-335 ◽  
Author(s):  
Linda Ke ◽  
Haihong Zhu ◽  
Jie Yin ◽  
Xinbing Wang

Purpose – The purpose of this paper is to report the influence of the peak laser power on laser micro sintering 4-μm nickel powder using Q-switched 1064-nm Nd:YAG laser. Design/methodology/approach – Experimental study has been performed. Nickel powder with grain size of 4 μm has been utilized. A Q-switching duration of 20-25 μs and rate of 20-40 kHz have been used. Findings – The peak power intensity is so high that the metal particles and molten pool are blown away, leading to laser micro sintering not being successfully proceeded. The scanning line obtained by continuous-wave (CW) laser looks like a rod owing to balling effect. Using a suitable peak power intensity, a good-shaped sintering line can be obtained because the plasma can protect the molten metal from oxidation, and improve the wettability of the system. In addition, the plasma flattening effect may also contribute to the form of the good-shaped sintering line in pulsed laser sintering regime. Originality/value – The role of plasma induced by pulsed laser with high peak power intensity has been found during pulsed laser sintering under an ambient environment.


2015 ◽  
Vol 7 (2) ◽  
pp. 1-10 ◽  
Author(s):  
Haibin Lu ◽  
Pu Zhou ◽  
Xiaolin Wang ◽  
Zongfu Jiang

Author(s):  
Chen Shi ◽  
Long Huang ◽  
Xiaolin Wang ◽  
Rongtao Su ◽  
Pu Zhou ◽  
...  

2015 ◽  
Vol 13 (2) ◽  
pp. 021403-21406 ◽  
Author(s):  
Zhaowei Wang Zhaowei Wang ◽  
Baitao Zhang Baitao Zhang ◽  
Jian Ning Jian Ning ◽  
Xiaotong Zhang Xiaotong Zhang ◽  
Xiancui Su Xiancui Su ◽  
...  

1997 ◽  
Author(s):  
Sarah Bollanti ◽  
Paolo Di Lazzaro ◽  
Francesco Flora ◽  
Gualtiero Giordano ◽  
Tommaso Letardi ◽  
...  

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