Simple formula for the interspaces of periodic grating structures self-organized on metal surfaces by femtosecond laser ablation
Simple formula for the interspaces of periodic grating structures self-organized on metal surfaces by femtosecond laser ablation
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DOI：
10.1063/1.4803940
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发表时间：
2013-04-29
影响因子：
4
通讯作者：
Sakabe, Shuji
中科院分区：
文献类型：
--
作者：
Hashida, Masaki;Ikuta, Yoshinobu;Sakabe, Shuji
通过电子显微镜研究了在波长为 800 和 400 nm 的飞秒激光脉冲照射下在 Mo 和 Ti 金属表面形成的自组织光栅结构。我们观察到在窄注量范围内低激光注量下用 400 nm 激光脉冲照射的金属上自组织光栅结构的形成。光栅结构的间隙取决于激光的波长和注量。我们发现，光栅间隙对激光注量的依赖性可以通过一个简单的公式来解释，该公式通过激光的参数衰减来感应表面等离子体波。 (C) 2013 AIP 出版有限责任公司。
Self-organized grating structures formed on Mo and Ti metal surfaces irradiated with femtosecond laser pulses at wavelengths of 800 and 400 nm are investigated by electron microscopy. We observe the formation of the self-organized grating structures on the metals irradiated with 400-nm laser pulses at low laser fluence in narrow fluence ranges. The interspaces of the grating structure depend on the wavelength and fluence of the laser. We find that the dependence of the grating interspaces on laser fluence can be explained by a simple formula for induction of a surface-plasma wave through the parametric decay of laser light. (C) 2013 AIP Publishing LLC.