Single-element beam shaper for conversion of a fiber laser beam into a near-diffraction-limited dark hollow beam

2013 ◽  
Author(s):  
Haotong Ma ◽  
Haojun Hu ◽  
Wenke Xie ◽  
Guangwen Jiang ◽  
Xiaojun Xu
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Single Element ◽  
Hollow Beam

Laser beam welding of titanium – A comparison of CO2 and fiber laser for potential aerospace applications

2008 ◽  
Author(s):  
Steffen Mueller ◽  
Craig Bratt ◽  
Peter Mueller ◽  
Jonathan Cuddy ◽  
Kartik Shankar
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Laser Beam Welding ◽  
Aerospace Applications

scholarly journals β factor of fundamental mode of fiber laser beam

2021 ◽  
Vol 70 (20) ◽  
pp. 204203-204203
Author(s):  
Zhang Yu-Qiu ◽  
◽  
Huang Liang-Jin ◽  
Chang Qi ◽  
An Yi ◽  
...  
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Fundamental Mode ◽  
I Factor

Parametric Analysis of Laser Beam Percussion Drilling for Thin Titanium Alloy Sheet Using Yb: Yag Fiber Laser

2021 ◽  
pp. 1-24
Author(s):  
Mohit Singh ◽  
Sanjay Mishra ◽  
Vinod Yadava ◽  
J. Ramkumar
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Pulse Width ◽  
Peak Power ◽  
Laser Pulses ◽  
Pulse Frequency ◽  
Alloy Sheet ◽  
Power Pulse ◽  
The Individual ◽  
Percussion Drilling

Laser beam percussion drilling (LBPD) can create high density holes in aerospace materials with the repeated application of laser pulses at a single spot. In this study, one-parameter-at-a-time approach has been used to investigate the individual effect of peak power, pulse width and pulse frequency on geometrical accuracy and metallurgical distortion during LBPD of 0.85[Formula: see text]mm thick Ti–6Al–4V sheet using 200[Formula: see text]W Yb:YAG fiber laser. It has been found that the output parameters behave differently at the higher and lower values of a particular input process. The increase of pulse width from 1 to 1.50[Formula: see text]ms increases hole taper by 20% whereas the same corresponding change from 1.50 to 2.00[Formula: see text]ms reduces the taper by 20%. The increase of pulse frequency from 10 to 50[Formula: see text]Hz reduces hole circularity by 40% but the same proportionate change from 50 to 90[Formula: see text]Hz reduces circularity by 79%. Increase of peak power from 1.70 to 2.0[Formula: see text]kW increases hole taper by 8% but the corresponding increase from 2 to 2.30[Formula: see text]kW is 143%.

Concept and Prospect of Quantum System Based Fiber Laser Beam Combination with Super High Brightness

2011 ◽  
Vol 38 (8) ◽  
pp. 0801001
Author(s):  
许晓军 Xu Xiaojun ◽  
杨子宁 Yang Zining ◽  
王红岩 Wang Hongyan ◽  
陆启生 Lu Qisheng
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Quantum System ◽  
High Brightness ◽  
Beam Combination
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