Temperature-dependent wetting characteristics of micro–nano-structured metal surface formed by femtosecond laser

2020 ◽  
Vol 56 (4) ◽  
pp. 3525-3534
Author(s):  
Ziyuan Liu ◽  
Ning Pan ◽  
Haiyan Tao ◽  
Jingquan Lin
Keyword(s):  
Femtosecond Laser ◽  
Metal Surface ◽  
Temperature Dependent

Effect of metal surface morphology on nano-structured patterns induced by a femtosecond laser pulse and its experimental verification

2018 ◽  
Vol 16 (7) ◽  
pp. 073202
Author(s):  
Haiying Song Haiying Song ◽  
Shengwang Tan Shengwang Tan ◽  
Elshaimaa M. Emara Elshaimaa M. Emara ◽  
Yanjie Zhang Yanjie Zhang ◽  
Shibing Liu Shibing Liu ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Surface Morphology ◽  
Metal Surface ◽  
Femtosecond Laser Pulse ◽  
Experimental Verification

Generation of Terahertz Radiation by Interaction of Intense Femtosecond Laser Pulses with a Metal Surface

2015 ◽  
Vol 57 (11) ◽  
pp. 807-820 ◽  
Author(s):  
R. A. Akhmedzhanov ◽  
I. E. Ilyakov ◽  
V. A. Mironov ◽  
I. V. Oladyshkin ◽  
E. V. Suvorov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Metal Surface ◽  
Terahertz Radiation ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

scholarly journals Simulation of femtosecond laser absorption by metallic targets and their thermal evolution

2017 ◽  
Vol 35 (3) ◽  
pp. 415-428 ◽  
Author(s):  
A. Suslova ◽  
A. Hassanein
Keyword(s):  
Femtosecond Laser ◽  
Laser Intensity ◽  
Laser Energy ◽  
Absorption Efficiency ◽  
Optical Parameters ◽  
Temperature Dependent ◽  
Simulation Code ◽  
Laser Absorption ◽  
Plasma State ◽  
Wide Range

AbstractThe interaction of femtosecond laser with initially cold solid metallic targets (Al, Au, Cu, Mo, Ni) was investigated in a wide range of laser intensity with focus on the laser energy absorption efficiency. Our developed simulation code (FEMTO-2D) is based on two-temperature model in two-dimensional configuration, where the temperature-dependent optical and thermodynamic properties of the target material were considered. The role of the collisional processes in the ultrashort pulse laser–matter interaction has been carefully analyzed throughout the process of material transition from the cold solid state into the dense plasma state during the pulse. We have compared the simulation predictions of the laser pulse absorption with temperature-dependent reflectivity and optical penetration depth to the case of constant optical parameters. By considering the effect of the temporal and spatial (radial) distribution of the laser intensity on the light absorption efficiency, we obtained a good agreement between the simulated results and available experimental data. The appropriate model for temperature-dependent optical parameters defining the laser absorption efficiency will allow more accurate simulation of the target thermal response in the applications where it is critical, such as prediction of the material damage threshold, laser ablation threshold, and the ablation profile.

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