Alignment of nanoparticles formed on the surface of 6H-SiC crystals irradiated by two collinear femtosecond laser beams
Alignment of nanoparticles formed on the surface of 6H-SiC crystals irradiated by two collinear femtosecond laser beams
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DOI：
10.1063/1.2186067
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发表时间：
2006-03
影响因子：
4
通讯作者：
T. Jia;F. Zhao;Min Huang;Hui-Hsien Chen;Jijun Qiu;R. Li;Zhong-tang Xu;H. Kuroda
中科院分区：
文献类型：
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作者：
T. Jia;F. Zhao;Min Huang;Hui-Hsien Chen;Jijun Qiu;R. Li;Zhong-tang Xu;H. Kuroda
Nanoripples with periods of 150 and 80 nm are formed on the surface of 6H-SiC crystals irradiated by the p-polarized 800 nm and the s-polarized 400 nm femtosecond lasers, respectively. When both of the two collinear laser beams focus simultaneously on the sample surface, nanoparticles are formed on the whole ablation area, and they array in parallel lines. We propose and confirm that the second harmonics in the sample surface excited by the incident lasers plays an important role in the formation of nanostructures.
