Uniformity evaluation of laser-induced periodic surface structures formed by two-color double-pulse femtosecond laser irradiation

Author:

Takenaka Keisuke12ORCID,Hashida Masaki34ORCID,Sakagami Hitoshi5ORCID,Masuno Shin-ichiro4,Kusaba Mitsuhiro6,Yamaguchi Shigeru7,Iwamori Satoru38,Sato Yuji2,Tsukamoto Masahiro2

Affiliation:

1. Graduate School of Engineering, Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan

2. Joining and Welding Research Institute, Osaka University, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan

3. Research Institute of Science and Technology, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan

4. Institute for Chemical Research, Kyoto University, Gokasyo, Uji, Kyoto 611-0011, Japan

5. National Institute for Fusion Science, Toki, Gifu 509-5292, Japan

6. Department of Electronics, Information and Communication Engineering, Osaka Sangyo University, 3-1-1 Nakagaito, Daito, Osaka 574-8530, Japan

7. Department Physics, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan

8. Department of Mechanical Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan

Abstract

The Perpendicular Period and Phase Scanning (P3S) method can evaluate the uniformity of a laser-induced periodic surface structure (LIPSS). P3S assesses the uniformity of LIPSS using the standard deviation of the peak period and the average of the phase difference in the direction perpendicular to LIPSS. The P3S method demonstrates that LIPSS formed by two-color double-pulse irradiation is reduced to a quarter of the period dispersion, and the average phase difference of LIPSS is also reduced compared to the single-pulse irradiation. In addition, a 3D electromagnetic particle-in-cell simulation was performed to evaluate the possibility of an improved uniformity of LIPSS. The results confirm that the two-color double-pulse irradiation produces a uniform LIPSS and validates the effectiveness of the P3S method to assess the uniformity of LIPSS.

Funder

Japan Science and Technology Agency

National Institute for Fusion Science

Publisher

AIP Publishing

Subject

Instrumentation

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