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- W2897594843 abstract "We demonstrate that a non-invasive sensing technique based on optical feedback interferometry is capable to instantaneously measure the ablation front displacement and the removal rate during ultrafast laser percussion drilling of metallic plates. The sawtooth-like modulation of the interferometric signal out of the detecting sensor has been analyzed to reveal the time dependence of the removal depth with sub-micrometric resolution. Various dynamic factors related to the influence of laser pulse duration and peak energy have been assessed by in-situ spatial- and time-dependent characterization all through the ablation process. The importance of real-time measurement of the ablation rate is crucial to improve the basic understanding of ultrafast laser-material interactions. Moreover, the detection system results high-sensitive, compact, and easily integrable in most industrial workstations, enabling the development of on-line control to improve the ablation efficiency and the quality of laser micro-machining processes.We demonstrate that a non-invasive sensing technique based on optical feedback interferometry is capable to instantaneously measure the ablation front displacement and the removal rate during ultrafast laser percussion drilling of metallic plates. The sawtooth-like modulation of the interferometric signal out of the detecting sensor has been analyzed to reveal the time dependence of the removal depth with sub-micrometric resolution. Various dynamic factors related to the influence of laser pulse duration and peak energy have been assessed by in-situ spatial- and time-dependent characterization all through the ablation process. The importance of real-time measurement of the ablation rate is crucial to improve the basic understanding of ultrafast laser-material interactions. Moreover, the detection system results high-sensitive, compact, and easily integrable in most industrial workstations, enabling the development of on-line control to improve the ablation efficiency and the quality of laser micro-machini..." @default.
- W2897594843 created "2018-10-26" @default.
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- W2897594843 date "2011-01-01" @default.
- W2897594843 modified "2023-10-14" @default.
- W2897594843 title "Direct in-situ measurement of the ablation rate in short pulse laser percussion drilling of metal targets" @default.
- W2897594843 doi "https://doi.org/10.2351/1.5062359" @default.
- W2897594843 hasPublicationYear "2011" @default.
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