期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 124, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/s00339-018-1694-2
关键词
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资金
- New Energy and Industrial Technology Development Organization (NEDO)
- JSPS KAKENHI [JP 17K14320]
- Grants-in-Aid for Scientific Research [17K14320] Funding Source: KAKEN
Pulse-by-pulse depth profile measurements were performed during femtosecond laser pulse irradiation on copper. The evolution of the ablation depth and the surface roughness during multi-pulse irradiation was investigated using a three-dimensional microscope. We found that a number of pulse irradiation was required to activate constant-rate ablation and the number of pulses depended on the fluence. We conclude that laser-induced embrittlement of a target material plays a decisive role to determine the ablation rate during multiple-pulse irradiation.
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