scholarly journals Formation of Oxide Layers with Femtosecond Laser on Steel Surfaces for Color Marking

2020 ◽  
Vol 5 (2) ◽  
pp. 174-178
Author(s):  
Gergely Juhász ◽  
Miklós Berczeli ◽  
Zoltán Weltsch
Keyword(s):  
Femtosecond Laser ◽  
Ultrashort Pulse ◽  
Metal Surfaces ◽  
Femtosecond Pulse ◽  
Surface Structures ◽  
Laser Marking ◽  
Periodic Surface ◽  
Oxide Layers ◽  
Ultrashort Pulse Lasers ◽  
Steel Surfaces

With the appearance of ultrashort pulse lasers, the researchers have begun working on various laser marking technology. Atmospheric heating and ablation of a surface induce laser coloration of metal surfaces. However, their application is still problematic today in the industry. With the appearance of femtosecond pulse lasers, a new concept became available for color marking. This concept is based on the formation of laser-induced periodic surface structures (LIPSS) on metal surfaces. The purpose of this article is to summarize the literature of laser color marking with ultrashort pulse lasers.

scholarly journals Multi-Angular Colorimetric Responses of Uni- and Omni-Directional Femtosecond Laser-Induced Periodic Surface Structures on Metals

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2010
Author(s):  
Taek-Yong Hwang ◽  
Yong-dae Kim ◽  
Jongweon Cho ◽  
Hai-Joong Lee ◽  
Hyo-Soo Lee ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Femtosecond Laser ◽  
Spatial Frequency ◽  
Femtosecond Laser Pulse ◽  
Metal Surfaces ◽  
Surface Structures ◽  
Pulse Irradiation ◽  
Periodic Surface ◽  
Frequency Laser ◽  
Angle Of Reflection

We investigated the colorimetric behaviors of metal surfaces with unidirectional low-spatial-frequency laser-induced periodic surface structures (UD-LSFLs) and omnidirectional LSFLs (OD-LSFLs) fabricated using femtosecond laser pulse irradiation. With the CIE standard illuminant D65, incident at −45°, we show that UD-LSFLs on metals transform polished metals to gonio-apparent materials with a unique behavior of colorimetric responses, depending on both the detection and rotation angles, whereas OD-LSFLs have nearly uniform gonio-apparent colors at each detection angle, regardless of their rotation. These colorimetric behaviors can be observed not only at the angles of diffraction but also near the angle of reflection, and we find that the power redistribution due to Rayleigh anomalies also plays an important role in the colorimetric responses of UD- and OD-LSFLs, in addition to diffraction.

Uniform colorization of metal surfaces through omnidirectional femtosecond laser-induced periodic surface structures

2020 ◽  
Author(s):  
Taek Yong Hwang ◽  
Heedeuk Shin ◽  
Hai Joong lee ◽  
Hyo Soo Lee ◽  
Chunlei Guo ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Metal Surfaces ◽  
Surface Structures ◽  
Periodic Surface

scholarly journals High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Iaroslav Gnilitskyi ◽  
Thibault J.-Y. Derrien ◽  
Yoann Levy ◽  
Nadezhda M. Bulgakova ◽  
Tomáš Mocek ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Speed ◽  
Surface Structures ◽  
Physical Origin ◽  
Periodic Surface

Maskless formation of uniform subwavelength periodic surface structures by double temporally-delayed femtosecond laser beams

2019 ◽  
Vol 471 ◽  
pp. 516-520 ◽  
Author(s):  
Sohail A. Jalil ◽  
Jianjun Yang ◽  
Mohamed ElKabbash ◽  
Subhash C. Singh ◽  
Chunlei Guo
Keyword(s):  
Femtosecond Laser ◽  
Surface Structures ◽  
Laser Beams ◽  
Periodic Surface

scholarly journals Titanium surface modification using femtosecond laser with 1013–1015 W/cm2 intensity in vacuum

2012 ◽  
Vol 31 (1) ◽  
pp. 29-36 ◽  
Author(s):  
M. Trtica ◽  
D. Batani ◽  
R. Redaelli ◽  
J. Limpouch ◽  
V. Kmetik ◽  
...  
Keyword(s):  
Surface Modification ◽  
Femtosecond Laser ◽  
Titanium Surface ◽  
Femtosecond Lasers ◽  
Single Pulse ◽  
Surface Structures ◽  
Pulse Regime ◽  
Periodic Surface ◽  
Reduced Intensity ◽  
Surface Changes

AbstractThe response of titanium surface irradiated with high intensity (1013 – 1015 W/cm2) Ti:sapphire laser was studied in vacuum. Most of the reported investigations were conducted with nano- to femtosecond lasers in gas atmospheres while the studies of titanium surface interacting with femtosecond laser in vacuum are scarce. The laser employed in our experiment was operating at 800 nm wavelength and pulse duration of 60 fs in single pulse regime. The observed surface changes and phenomena are (1) creation of craters, (2) formation of periodic surface structures at the reduced intensity, and (3) occurrence of plasma in front the target. Since microstructuring of titanium is very interesting in many areas (industry, medicine), it can be concluded from this study that the reported laser intensities can effectively be applied for micromachining of the titanium surface (increasing the roughness, formation of parallel periodic surface structures etc.).

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