Evolution of aluminum surface irradiated by femtosecond laser pulses with different pulse overlaps
Evolution of aluminum surface irradiated by femtosecond laser pulses with different pulse overlaps
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DOI：
10.1016/j.apsusc.2013.03.067
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发表时间：
2013-07
影响因子：
6.7
通讯作者：
Guoqiang Li;Jiawen Li;Liang Yang;Xiaohong Li;Yanlei Hu;J. Chu;Wenhao Huang
中科院分区：
文献类型：
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作者：
Guoqiang Li;Jiawen Li;Liang Yang;Xiaohong Li;Yanlei Hu;J. Chu;Wenhao Huang
我们报道了在空气中用不同脉冲重叠的飞秒激光脉冲对铝表面进行改性。几种结构色可以通过改变脉冲重叠从-27%到99%在铝表面上产生。SEM图像显示，改性区域的结构颜色取决于表面形貌。X射线光电子能谱（XPS）和X射线衍射谱（XRD）表明，随着脉冲重叠度的增加，Al 2 O3含量增加，Al（OH）3含量减少。当脉冲重叠度大于93%时，铝表面仅形成Al 2 O3。
We report the modification of aluminum surfaces by femtosecond laser pulses with different pulse overlaps in ambient air. Several kinds of structural colors can be generated on the aluminum surfaces by varying the pulse overlap from −27% to 99%. The SEM images reveal that the structural colors of the modified area depend on the surface morphology. Furthermore, X-ray photoelectron spectroscopy and X-ray diffraction spectra show that the content of Al2O3increases while that of Al(OH)3decreases with the increase of the pulse overlap. Only Al2O3is formed on the aluminum surfaces when the pulse overlap is larger than 93%.