Formation of Slantwise Surface Ripples by Femtosecond Laser Irradiation

被引：5
|
作者：
Zheng, Xin [1 ,2 ]
Cong, Cong [3 ]
Lei, Yuhao [1 ]
Yang, Jianjun [1 ]
Guo, Chunlei [1 ,4 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Guo China US Photon Lab, Changchun 130033, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Coll Mat Sci & Optoelect Technol, Beijing 100049, Peoples R China
[3] Univ Sci & Technol China, Sch Gifted Young, Hefei 230026, Anhui, Peoples R China
[4] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
来源：
NANOMATERIALS | 2018年 / 8卷 / 07期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
femtosecond laser; laser-induced periodic surface structures; anomalous slanting ripples; chromium; STAINLESS-STEEL; FUSED-SILICA; PULSES; CHROMIUM; METALS; DYNAMICS; COATINGS; CRYSTAL;
D O I：
10.3390/nano8070458
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report on the formation of slantwise-oriented periodic subwavelength ripple structures on chromium surfaces irradiated by single-beam femtosecond laser pulses at normal incidence. Unexpectedly, the ripples slanted in opposite directions on each side the laser-scanned area, neither perpendicular nor parallel to the laser polarization. The modulation depth was also found to change from one ripple to the next ripple. A theoretical model is provided to explain our observations, and excellent agreement is shown between the simulations and the experimental results. Moreover, the validity of our theory is also confirmed on bulk chromium surfaces. Our study provides insights for better understanding and control of femtosecond laser nanostructuring.
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收藏
页数：10
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