Formation of extraordinarily uniform periodic structures on metals induced by femtosecond laser pulses
Formation of extraordinarily uniform periodic structures on metals induced by femtosecond laser pulses
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DOI：
10.1063/1.2214464
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发表时间：
2006-07
影响因子：
3.2
通讯作者：
Jincheng Wang;Chunlei Guo
中科院分区：
文献类型：
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作者：
Jincheng Wang;Chunlei Guo
本文报道了p偏振飞秒激光脉冲在不同斜入射角下对金属的异常均匀周期结构的观察。高度均匀的结构平行于激光偏振方向。研究了这些结构周期的角依赖性，结果表明这些结构是由入射光和激发表面等离子体之间的干涉形成的。在相同的实验条件下，这些高度均匀的结构在不同金属上表现出明显不同的形态清晰度，这种差异可以通过考虑不同金属中的电子-声子耦合强度来解释。
In this paper, we report an observation of extraordinarily uniform periodic structures on metals following p-polarized femtosecond laser pulses at various obliquely incident angles. The highly uniform structures are oriented parallel to the laser polarization. Angular dependence of the period of these structures is studied, and the results indicate that these structures are formed by the interference between the incident light and excited surface plasmons. Under identical experimental conditions, these highly uniform structures show distinctly different levels of morphological clearness on different metals, and this difference can be explained by considering the electron-phonon coupling strength in different metals.