| 用激光诱导击穿光谱测量铝合金的激光烧蚀阈值 |
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| 引用本文： | 杨雪娇,彭飞飞,李润华.用激光诱导击穿光谱测量铝合金的激光烧蚀阈值[J].强激光与粒子束,2013,25(3):557-560. |
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| 作者姓名： | 杨雪娇 彭飞飞 李润华 |
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| 作者单位： | 1.华南理工大学 理学院 物理系, 广州 51 0641 |
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| 基金项目： | 国家重大科学研究计划项目(2012CB921900);中央高校科研业务费专项资金项目(x2lx-D2116740);国家自然科学基金项目(10874047) |
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| 摘 要： | 采用正交几何配置的双波长双脉冲激光烧蚀-激光诱导击穿光谱技术准确测量了铝合金样品的激光烧蚀阈值。在烧蚀激光波长为532 nm、脉宽为12 ns并采用焦距为2 cm的非球面透镜强聚焦的条件下，得到铝合金的激光能量烧蚀阈值为48 J，等效的能量密度烧蚀阈值为9.8 J/cm2。该技术是一种新的激光烧蚀阈值的光谱测量手段，与传统的测量技术相比，具有高灵敏、准确、快捷和便利的特点，可以用于不同材料的激光烧蚀阈值的准确测量。
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| 关 键 词： | 激光诱导击穿光谱 激光烧蚀阈值 阈值测量 |
| 收稿时间： | 2012-04-27 |
Determination of laser-ablation threshold of aluminum alloy with laser-induced breakdown spectroscopy |
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| Yang Xuejiao,Peng Feifei,Li Runhua.Determination of laser-ablation threshold of aluminum alloy with laser-induced breakdown spectroscopy[J].High Power Laser and Particle Beams,2013,25(3):557-560. |
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| Authors: | Yang Xuejiao Peng Feifei Li Runhua |
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| Affiliation: | 1.Department of Physics,School of Science,South China University of Technology,Guangzhou 510641,China |
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| Abstract: | The laser-ablation threshold of aluminum alloy was accurately measured by dual-wavelength dual-pulse laser-ablation laser-induced breakdown spectroscopy under orthogonal geometric arrangement. For 532 nm laser wavelength and 12 ns laser pulse width, the laser-ablation energy threshold of aluminum alloy was determined to be 48 J, equivalent with a fluence threshold of 9.8 J/cm2, under tightly focused condition with an aspheric lens of 2 cm focal length. This is a new spectroscopic method to measure laser-ablation threshold. It is more sensitive and more accurate in comparison with established methods for laser-ablation threshold measurement, and the measurement is rapid and quite convenient. This method can be used for accurate laser-ablation threshold measurement for different materials. |
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