Picosecond laser-induced surface structures on alloys in liquids and their influence on nanoparticle productivity during laser ablation

被引：16

作者：

Nadarajah, Ruksan

Barcikowski, Stephan

Goekce, Bilal ^{[1
]}

机构：

[1] Univ Duisburg Essen, Tech Chem 1, Univ Str 7, D-45141 Essen, Germany

来源：

OPTICS EXPRESS | 2020年 / 28卷 / 03期

关键词：

HIGH-REPETITION-RATE; FEMTOSECOND LASER; GOLD; SILVER; FABRICATION; BEHAVIOR; SILICON; METALS;

D O I：

10.1364/OE.28.002909

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The productivity of nanoparticles formed by laser ablation of gold-silver and iron-gold alloy as well as copper and iron-nickel alloy targets in water is correlated with the formation of laser-induced surface structures. At a laser fluence optimized for maximum nanoparticle productivity, it is found that a binary alloy with an equimolar ratio forms laser-induced periodic surface structures (LIPSS) after ablation, if one of the constituent metals also form LIPSS. The ablation rate of nanoparticles linearly depends on the laser fluence if LIPSS is not formed, while a logarithmic trend and a decrease in productivity is evident when LIPSS is formed. To cancel LIPSS formation and recover from this decrease, a change to circularly polarized light is performed and an increase in nanoparticle productivity of more than 30% is observed. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

收藏

页码：2909 / 2924

页数：16

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