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

doi:10.3390/ma11122380

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	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.
刊名	Materials
	2018
卷号	11 期号:12 页码:9
关键词	time-delayed femtosecond lasers orthogonal polarizations subwavelength triangular structures tungsten surface-structures photonic crystals fabrication nanostructures lithography plasmonics Materials Science
ISSN号	1996-1944
DOI	10.3390/ma11122380
英文摘要	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.
内容类型	期刊论文
源URL	[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.