One-step fabrication of bi- and quad-directional femtosecond laser-induced periodic surface structures on metal with a depolarizer
| Autor: | Byounghwak Lee, Jeongjin Kang, Taek Yong Hwang, Heedeuk Shin, Chunlei Guo |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Fabrication General Physics and Astronomy One-Step 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Metal Optics law business.industry Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser Polarization (waves) 0104 chemical sciences Surfaces Coatings and Films Achromatic lens visual_art Femtosecond visual_art.visual_art_medium 0210 nano-technology business Raster scan |
| Zdroj: | Applied Surface Science. 493:231-238 |
| ISSN: | 0169-4332 |
| Popis: | With femtosecond (fs) laser pulse irradiation, a simple but efficient technique to fabricate bi- and quad-directional low spatial frequency laser-induced periodic surface structures (BD- and QD-LSFLs) is suggested on metals. By inserting a quartz wedge achromatic depolarizer prior to the focusing optics, we change the polarization of fs laser pulses periodically in one dimension within the laser spot, and find that this method leads to the creation of BD- and QD-LSFLs by simply raster scanning fs laser pulses on Ni. It is also demonstrated that the interval of orientation change of BD-LSFLs can be manipulated with defocus. |
| Databáze: | OpenAIRE |
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