Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy
Various types of micro-/nanostructures can be fabricated by femtosecond laser irradiation on metal surfaces. It has received extensive attention and research because of its potential application value. In this paper, the effect of laser focusing position on the micro-/nanostructure formation on the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0142631 |
| _version_ | 1797771929520701440 |
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| author | Lin Song Yaowen He Xianfu Wu Haiyan Tao Jingquan Lin |
| author_facet | Lin Song Yaowen He Xianfu Wu Haiyan Tao Jingquan Lin |
| author_sort | Lin Song |
| collection | DOAJ |
| description | Various types of micro-/nanostructures can be fabricated by femtosecond laser irradiation on metal surfaces. It has received extensive attention and research because of its potential application value. In this paper, the effect of laser focusing position on the micro-/nanostructure formation on the surface of a titanium alloy (TC4) was systematically researched. The experimental results show that, in the process of femtosecond laser focusing, a spatial distribution of laser energy with a narrower beam center and a ring around the beam is formed in front of the geometric focus and the distribution of laser energy changes along the laser transmission direction. This property can affect the morphology of the micro-/nanostructure on the surface of irradiated materials. It is believed that the new spatial distribution of laser fluence caused by focusing is due to the nonlinear process of plasma defocus and laser self-focusing caused by multi-photon or tunnel ionization in front of the target by focusing the femtosecond laser. The discovery of the nonlinear characteristics of the focused femtosecond laser and the application of the unique energy spatial distribution to the surface morphology of the fabricated surface put forward a new idea for the direct fabrication of micro-/nanostructures via femtosecond laser, which has certain significance for the development of micro-/nanofabrication technology of femtosecond lasers. |
| first_indexed | 2024-03-12T21:44:44Z |
| format | Article |
| id | doaj.art-d0dec941231142598eec363f4cdb2389 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-03-12T21:44:44Z |
| publishDate | 2023-03-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-d0dec941231142598eec363f4cdb23892023-07-26T14:03:58ZengAIP Publishing LLCAIP Advances2158-32262023-03-01133035229035229-610.1063/5.0142631Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloyLin Song0Yaowen He1Xianfu Wu2Haiyan Tao3Jingquan Lin4School of Physics, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Physics, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Physics, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Physics, Changchun University of Science and Technology, Changchun 130022, ChinaSchool of Physics, Changchun University of Science and Technology, Changchun 130022, ChinaVarious types of micro-/nanostructures can be fabricated by femtosecond laser irradiation on metal surfaces. It has received extensive attention and research because of its potential application value. In this paper, the effect of laser focusing position on the micro-/nanostructure formation on the surface of a titanium alloy (TC4) was systematically researched. The experimental results show that, in the process of femtosecond laser focusing, a spatial distribution of laser energy with a narrower beam center and a ring around the beam is formed in front of the geometric focus and the distribution of laser energy changes along the laser transmission direction. This property can affect the morphology of the micro-/nanostructure on the surface of irradiated materials. It is believed that the new spatial distribution of laser fluence caused by focusing is due to the nonlinear process of plasma defocus and laser self-focusing caused by multi-photon or tunnel ionization in front of the target by focusing the femtosecond laser. The discovery of the nonlinear characteristics of the focused femtosecond laser and the application of the unique energy spatial distribution to the surface morphology of the fabricated surface put forward a new idea for the direct fabrication of micro-/nanostructures via femtosecond laser, which has certain significance for the development of micro-/nanofabrication technology of femtosecond lasers.http://dx.doi.org/10.1063/5.0142631 |
| spellingShingle | Lin Song Yaowen He Xianfu Wu Haiyan Tao Jingquan Lin Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy AIP Advances |
| title | Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy |
| title_full | Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy |
| title_fullStr | Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy |
| title_full_unstemmed | Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy |
| title_short | Effect of transmission characteristics of femtosecond laser focusing on micro-/nanostructure morphology of titanium alloy |
| title_sort | effect of transmission characteristics of femtosecond laser focusing on micro nanostructure morphology of titanium alloy |
| url | http://dx.doi.org/10.1063/5.0142631 |
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