【摘 要】
：
As a new research area, laser surface wettability modification brings new applications for both laser and materials for industry. The picoseconds (10 ps) pulse
【机 构】
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Laser Group,Department of Engineering,University of Liverpool,Brodie Building,Liverpool L69 3GQ,UK,S
【出 处】
：
Chinese Optics Letters
论文部分内容阅读
As a new research area, laser surface wettability modification brings new applications for both laser and materials for industry. The picoseconds (10 ps) pulse laser surface micro-processing over alumina covered aluminium is researched. In the experiment, 10-ps laser pulse is employed and the energy threshold for different laser wavelength and repetition rate is measured. At the repetition rate of 5 kHz, the energy thresholds are: 1 064 nm: 4.0 μJ/pulse, 532 nm: 2.8 μJ/pulse, and 355 nm: 4.2 μJ/pulse. Picoseconds pulse laser is demonstrated feasible in surface scanning at industrial level.
As a new research area, laser surface wettability modification brings new applications for both laser and materials for industry. The picoseconds (10 ps) pulse laser surface micro-processing over alumina covered aluminum is researched. In the experiment, 10-ps laser pulse is employed and the energy threshold for different laser wavelengths and repetition rate are measured. At the repetition rate of 5 kHz, the energy thresholds are: 1 064 nm: 4.0 μJ / pulse, 532 nm: 2.8 μJ / pulse, and 355 nm: 4.2 μJ / pulse. Picoseconds pulse laser is demonstrated feasible in surface scanning at industrial level.
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