中国物理B ›› 2024, Vol. 33 ›› Issue (2): 24207-024207.doi: 10.1088/1674-1056/ad028f

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Effect of sample temperature on femtosecond laser ablation of copper

Wei-Jie Dang(党伟杰)1,2, Yu-Tong Chen(陈雨桐)1,2, An-Min Chen(陈安民)1,2,†, and Ming-Xing Jin(金明星)1,2,‡   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
  • 收稿日期:2023-07-18 修回日期:2023-10-11 接受日期:2023-10-12 出版日期:2024-01-16 发布日期:2024-01-19
  • 通讯作者: An-Min Chen, Ming-Xing Jin E-mail:amchen@jlu.edu.cn;mxjin@jlu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307701) and the National Natural Science Foundation of China (Grant Nos. 11674128, 11674124, and 11974138).

Effect of sample temperature on femtosecond laser ablation of copper

Wei-Jie Dang(党伟杰)1,2, Yu-Tong Chen(陈雨桐)1,2, An-Min Chen(陈安民)1,2,†, and Ming-Xing Jin(金明星)1,2,‡   

  1. 1 Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;
    2 Jilin Provincial Key Laboratory of Applied Atomic and Molecular Spectroscopy, Jilin University, Changchun 130012, China
  • Received:2023-07-18 Revised:2023-10-11 Accepted:2023-10-12 Online:2024-01-16 Published:2024-01-19
  • Contact: An-Min Chen, Ming-Xing Jin E-mail:amchen@jlu.edu.cn;mxjin@jlu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2019YFA0307701) and the National Natural Science Foundation of China (Grant Nos. 11674128, 11674124, and 11974138).

摘要: We conduct an experimental study supported by theoretical analysis of single laser ablating copper to investigate the interactions between laser and material at different sample temperatures, and predict the changes of ablation morphology and lattice temperature. For investigating the effect of sample temperature on femtosecond laser processing, we conduct experiments on and simulate the thermal behavior of femtosecond laser irradiating copper by using a two-temperature model. The simulation results show that both electron peak temperature and the relaxation time needed to reach equilibrium increase as initial sample temperature rises. When the sample temperature rises from 300 K to 600 K, the maximum lattice temperature of the copper surface increases by about 6500 K under femtosecond laser irradiation, and the ablation depth increases by 20%. The simulated ablation depths follow the same general trend as the experimental values. This work provides some theoretical basis and technical support for developing femtosecond laser processing in the field of metal materials.

关键词: femtosecond laser, two-temperature model, sample temperature, ablation depth

Abstract: We conduct an experimental study supported by theoretical analysis of single laser ablating copper to investigate the interactions between laser and material at different sample temperatures, and predict the changes of ablation morphology and lattice temperature. For investigating the effect of sample temperature on femtosecond laser processing, we conduct experiments on and simulate the thermal behavior of femtosecond laser irradiating copper by using a two-temperature model. The simulation results show that both electron peak temperature and the relaxation time needed to reach equilibrium increase as initial sample temperature rises. When the sample temperature rises from 300 K to 600 K, the maximum lattice temperature of the copper surface increases by about 6500 K under femtosecond laser irradiation, and the ablation depth increases by 20%. The simulated ablation depths follow the same general trend as the experimental values. This work provides some theoretical basis and technical support for developing femtosecond laser processing in the field of metal materials.

Key words: femtosecond laser, two-temperature model, sample temperature, ablation depth

中图分类号:  (Laser applications)

  • 42.62.-b
52.38.Mf (Laser ablation)