High spatial frequency periodic structures induced on metal surface by femtosecond laser pulses

被引：88

作者：

Yao, Jian-Wu ^{[1
]}

Zhang, Cheng-Yun ^{[1
]}

Liu, Hai-Ying ^{[1
]}

Dai, Qiao-Feng ^{[1
]}

Wu, Li-Jun ^{[1
]}

Lan, Sheng ^{[1
]}

Gopal, Achanta Venu ^{[2
]}

Trofimov, Vyacheslav A. ^{[3
]}

Lysak, Tatiana M. ^{[3
]}

机构：

[1] S China Normal Univ, Lab Photon Informat Technol, Sch Informat & Optoelect Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China

[2] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India

[3] Moscow MV Lomonosov State Univ, Dept Computat Math & Cybernet, Moscow 119992, Russia

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 02期

基金：

中国国家自然科学基金;

关键词：

SUBWAVELENGTH RIPPLE FORMATION; PATTERN-FORMATION; SILICON; AL;

D O I：

10.1364/OE.20.000905

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The high spatial frequency periodic structures induced on metal surface by femtosecond laser pulses was investigated experimentally and numerically. It is suggested that the redistribution of the electric field on metal surface caused by the initially formed low spatial frequency periodic structures plays a crucial role in the creation of high spatial frequency periodic structures. The field intensity which is initially localized in the grooves becomes concentrated on the ridges in between the grooves when the depth of the grooves exceeds a critical value, leading to the ablation of the ridges in between the grooves and the formation of high spatial frequency periodic structures. The proposed formation process is supported by both the numerical simulations based on the finite-difference time-domain technique and the experimental results obtained on some metals such as stainless steel and nickel. (C) 2012 Optical Society of America

引用

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页码：905 / 911

页数：7

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