A numerical analysis of high power laser propagation in magnetized plasmas

1977 ◽  
Vol 86 (2) ◽  
pp. 255-263 ◽  
Author(s):  
R L Druce ◽  
M Kristiansen ◽  
M O Hagler
Keyword(s):  
Numerical Analysis ◽  
High Power ◽  
Magnetized Plasmas ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation

Numerical simulation for effects of high-power laser propagation in atmosphere over land

2010 ◽  
Author(s):  
Chun-ping Yang ◽  
Yan Zhang ◽  
Mei-lin Kang ◽  
Jing Guo ◽  
Wu-guang He ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation

High power laser propagation

1976 ◽  
Vol 15 (6) ◽  
pp. 1479 ◽  
Author(s):  
Frederick G. Gebhardt
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation

scholarly journals Influence of a laser profile in impedance mismatch techniques applied to carbon EOS measurement

2013 ◽  
Vol 1 (2) ◽  
pp. 102-104 ◽  
Author(s):  
A. Aliverdiev ◽  
D. Batani ◽  
R. Dezulian
Keyword(s):  
Numerical Analysis ◽  
Equation Of State ◽  
High Power ◽  
Laser Intensity ◽  
Laser Pulses ◽  
High Power Laser ◽  
Power Laser ◽  
Impedance Mismatch ◽  
Target Design ◽  
Laser Profile

AbstractWe present a recent numerical analysis of impedance mismatch technique applied to carbon equation of state measurements. We consider high-power laser pulses with a Gaussian temporal profile of different durations. We show that for the laser intensity (${\approx }1{0}^{14} ~\mathrm{W} / {\mathrm{cm} }^{2} $) and the target design considered in this paper we need to have laser pulses with rise-time less than 150 ps.

High Power Laser Propagation Through A Structured Environment

1988 ◽  
Author(s):  
Thomas Goldring ◽  
Lawrence Carlson ◽  
Peter Ulrich
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation

The steady-state thermal blooming of the high-power laser propagation in the rain

2016 ◽  
Vol 30 (14) ◽  
pp. 1877-1884
Author(s):  
Le Wang ◽  
Wenbin Lin ◽  
Chenglong Wu ◽  
Peidong Yang ◽  
Feibiao Dong
Keyword(s):  
Steady State ◽  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation ◽  
Thermal Blooming

The code SG99 for high-power laser propagation and its applications

2005 ◽  
Author(s):  
Jingqin Su ◽  
Wenyi Wang ◽  
Feng Jing ◽  
Zhitao Peng ◽  
Qingquan Zhang ◽  
...  
Keyword(s):  
High Power ◽  
High Power Laser ◽  
Power Laser ◽  
Laser Propagation

scholarly journals Numerical Analysis of the Partial Penetration High Power Laser Beam Welding of Thick Sheets at High Process Speeds

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1319
Author(s):  
Antoni Artinov ◽  
Xiangmeng Meng ◽  
Marcel Bachmann ◽  
Michael Rethmeier
Keyword(s):  
Numerical Analysis ◽  
Laser Beam ◽  
Ray Tracing ◽  
Penetration Depth ◽  
High Power ◽  
Laser Beam Welding ◽  
High Power Laser ◽  
Power Laser ◽  
Trapping Effect ◽  
Process Speed

The present work is devoted to the numerical analysis of the high-power laser beam welding of thick sheets at different welding speeds. A three-dimensional transient multi-physics numerical model is developed, allowing for the prediction of the keyhole geometry and the final penetration depth. Two ray tracing algorithms are implemented and compared, namely a standard ray tracing approach and an approach using a virtual mesh refinement for a more accurate calculation of the reflection point. Both algorithms are found to provide sufficient accuracy for the prediction of the keyhole depth during laser beam welding with process speeds of up to 1.5mmin−1. However, with the standard algorithm, the penetration depth is underestimated by the model for a process speed of 2.5mmin−1 due to a trapping effect of the laser energy in the top region. In contrast, the virtually refined ray tracing approach results in high accuracy results for process speeds of both 1.5mmin−1 and 2.5mmin−1. A detailed study on the trapping effect is provided, accompanied by a benchmark including a predefined keyhole geometry with typical characteristics for the high-power laser beam welding of thick plates at high process speed, such as deep keyhole, inclined front keyhole wall, and a hump.

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