| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Mechanism of Spatiotemporal Distribution of Laser Ablated Materials |
| XU Rong-Qing1,2, CUI Yi-Ping1, LU Jian3, NI Xiao-Wu3 |
| 1Department of Electronic Engineering, Southeast University, Nanjing 2100962College of Optoelectronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 2100033Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094 |
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| Cite this article: |
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XU Rong-Qing, CUI Yi-Ping, LU Jian et al 2009 Chin. Phys. Lett. 26 015201 |
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Abstract Interaction between subsequent laser and ablated materials in laser processing changes the laser spatiotemporal distribution and has influences on the efficiency and quality of laser processing. The theoretical and experimental researches on transportation behaviour of ablated materials are provided. It is shown that the velocity distribution of ablated materials is determined by ablation mechanism. The transportation behaviour of ablated materials is controlled by diffusion mechanism and light field force during laser pulse duration while it is only determined by diffusion mechanism when the laser pulse terminates. In addition, the spatiotemporal distribution of ablated materials is presented.
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| Keywords:
52.38.Mf
52.38.Kb
81.70.Fy
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Received: 12 September 2008
Published: 24 December 2008
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