Real-time in-focus CO2 and fiber laser beam optimization with a twin hexapod operated beam expander and fully automated beam analysis with simultaneous raw and focused beam measurement

2019 ◽  
Author(s):  
Murad Jamalieh ◽  
Markus Bohrer
Keyword(s):  
Laser Beam ◽  
Fiber Laser ◽  
Real Time ◽  
Beam Expander ◽  
Beam Analysis ◽  
Focused Beam

Real-time observation of dissipative solitons formation and breaking dynamics in a mode-locked fiber laser

2021 ◽  
pp. 103786
Author(s):  
Dongdong Han ◽  
Yijie Wang ◽  
Zhanqiang Hui ◽  
Zhixing Zhang ◽  
Kaili Ren ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Real Time ◽  
Dissipative Solitons ◽  
Time Observation ◽  
Real Time Observation

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

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

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

scholarly journals Real Time Trajectory Correction System Of Optical Head In Laser Welding

2015 ◽  
Vol 9 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Wojciech Cieszyński ◽  
Michał Zięba ◽  
Jacek Reiner
Keyword(s):  
Laser Beam ◽  
Laser Welding ◽  
Real Time ◽  
Laser Processing ◽  
High Accuracy ◽  
Precise Positioning ◽  
Optical Head ◽  
Welding Technology ◽  
Trajectory Correction ◽  
Correction System

Abstract Application of laser welding technology requires that the laser beam is guided through the whole length of the joint with sufficiently high accuracy. This paper describes result of research on development of optomechatronic system that allows for the precise positioning of the laser head’s TCP point on the edge of welded elements during laser processing. The developed system allows for compensation of workpiece’s fixture inaccuracies, precast distortions and workpiece deformations occurring during the process.

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%.

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