Fabricating subwavelength dot-matrix surface structures of Molybdenum by transient correlated actions of two-color femtosecond laser beams

被引：45

作者：

Cong, Jia ^{[1
]}

Yang, Jianjun ^{[1
]}

Zhao, Bo ^{[1
]}

Xu, Xianfan ^{[2
]}

机构：

[1] Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China

[2] Purdue Univ, Sch Mech Engn, Birck Nanotechnol Ctr, W Lafayette, IN 47907 USA

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 04期

基金：

美国国家科学基金会; 高等学校博士学科点专项科研基金;

关键词：

PULSES;

D O I：

10.1364/OE.23.005357

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Two-dimensional matrix of subwavelength dot structures are directly generated on molybdenum surfaces by focusing two-color femtosecond laser pulses through an optical lens. In contrast to the traditional fabrication approaches, the spatial periodicities of such surface structures are demonstrated to rely on the time delay of two laser beams through transient correlation between their ultrafast dynamic processes, in spite of their different colors and polarizations. The structure orientations can be tuned effectively via the laser polarization. Discussion suggests a new possible flexible way towards the nanoscale sophisticated material processing for many potential applications. (C) 2015 Optical Society of America

引用

页码：5357 / 5367

页数：11

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