• Chinese Optics Letters
  • Vol. 19, Issue 12, 123801 (2021)
Yifei Li1, Jie Hu1、*, Wei Liu1, Jiangang Yin2, and Jiangang Lu2
Author Affiliations
  • 1Laser Micro/Nano Fabrication Laboratory, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 2Han’s Laser Technology Industry Group Co., Ltd., Shenzhen 518126, China
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    Abstract

    In this work, we used femtosecond laser double-pulse trains to produce laser-induced periodic surface structures (LIPSS) on 304 stainless steel. Surprisingly, a novel type of periodic structure was discovered, which, to the best of our knowledge, is the first in literature. We surmised that the cause for this novel LIPSS was related to the weak energy coupling of subpulses when the intrapulse delay was longer than the thermal relaxation time of stainless steel. Furthermore, we found that the fluence combination and arrival sequence of subpulses in a double-pulse train also influenced LIPSS morphology.
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    Yifei Li, Jie Hu, Wei Liu, Jiangang Yin, Jiangang Lu. High period frequency LIPSS emerging on 304 stainless steel under the irradiation of femtosecond laser double-pulse trains[J]. Chinese Optics Letters, 2021, 19(12): 123801
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    Category: Light-matter Interaction
    Received: Apr. 6, 2021
    Accepted: May. 17, 2021
    Published Online: Sep. 15, 2021
    The Author Email: Jie Hu (jiehu2@bit.edu.cn)