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首页> 外文期刊>Applied Surface Science >Formation of laser-induced periodic surface structures (LIPSS) on tool steel by multiple picosecond laser pulses of different polarizations
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Formation of laser-induced periodic surface structures (LIPSS) on tool steel by multiple picosecond laser pulses of different polarizations

机译：通过不同极化的多个皮秒激光脉冲在工具钢上形成激光诱导的周期性表面结构（LIPSS）

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摘要

Laser-induced periodic surface structures (LIPSS) are produced on cold work tool steel by irradiation with a low number of picosecond laser pulses. As expected, the ripples, with a period of about 90% of the laser wavelength, are oriented perpendicular to the laser polarization. Subsequent irradiation with the polarization rotated by 45 or 90 results in a corresponding rotation of the ripples. This is visible already with the first pulse and becomes almost complete-erasing the previous orientation-after as few as three pulses. The phenomenon is not only observed for single-spot irradiation but also for writing long coherent traces. The experimental results strongly defy the role of surface plasmon-polaritons as the predominant key to LIPSS formation. (C) 2016 Elsevier B.V. All rights reserved.
机译：激光诱导的周期性表面结构（LIPSS）通过使用少量皮秒激光脉冲进行辐照在冷作工具钢上产生。正如预期的那样，周期大约为激光波长的90％的波纹定向为垂直于激光偏振。随后的偏振旋转45或90度的辐照导致波纹相应旋转。在第一个脉冲中就已经可见，并且在最少三个脉冲之后几乎完全擦除了先前的方向。这种现象不仅在单点辐射中观察到，而且在书写长相干迹线时也观察到。实验结果强烈反对表面等离振子-极化子作为LIPSS形成的主要关键的作用。 （C）2016 Elsevier B.V.保留所有权利。

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