Formation of Subwavelength Periodic Triangular Arrays on Tungsten through Double-Pulsed Femtosecond Laser Irradiation

doi:10.3390/ma11122380

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	Formation of Subwavelength Periodic Triangular Arrays on Tungsten through Double-Pulsed Femtosecond Laser Irradiation
	Qiao, H. Z.; Yang, J. J.; Li, J.; Liu, Q.; Liu, J.; Guo, C. L.
	2018
发表期刊	Materials
ISSN	1996-1944
卷号	11 期号:12 页码:9
摘要	We present a mask-free strategy for fabricating two-dimensional subwavelength periodic triangular arrays on tungsten, by focusing two orthogonally polarized and temporally delayed femtosecond laser beams using a cylindrical lens. In stark contrast to the commonly observed structures of either a single ablation spot or a one-dimensional grating, we obtained highly uniform periodic triangular arrays on the laser-exposed surface, with three equilateral sides each of 480 nm in length and about 100 nm in modulation depth. The triangular features varied with both the laser energy and the scanning speed. We found that the optical reflectivity of such a surface reduces significantly within the spectral range of 700-2500 nm. The triangular structure morphology can also be controlled by varying the time delay between the two laser beams.
关键词	time-delayed femtosecond lasers orthogonal polarizations subwavelength triangular structures tungsten surface-structures photonic crystals fabrication nanostructures lithography plasmonics Materials Science
DOI	10.3390/ma11122380
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61000
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Qiao, H. Z.,Yang, J. J.,Li, J.,et al. Formation of Subwavelength Periodic Triangular Arrays on Tungsten through Double-Pulsed Femtosecond Laser Irradiation[J]. Materials,2018,11(12):9.
APA	Qiao, H. Z.,Yang, J. J.,Li, J.,Liu, Q.,Liu, J.,&Guo, C. L..(2018).Formation of Subwavelength Periodic Triangular Arrays on Tungsten through Double-Pulsed Femtosecond Laser Irradiation.Materials,11(12),9.
MLA	Qiao, H. Z.,et al."Formation of Subwavelength Periodic Triangular Arrays on Tungsten through Double-Pulsed Femtosecond Laser Irradiation".Materials 11.12(2018):9.

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