Hybrid Grating-Hole Nanostructures Produced by Spatiotemporal Modulation of Femtosecond Lasers: Implications for Near-Field Enhancement

doi:10.1021/acsanm.2c01787

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	Hybrid Grating-Hole Nanostructures Produced by Spatiotemporal Modulation of Femtosecond Lasers: Implications for Near-Field Enhancement
	Z. Zhao and J. J. Yang
刊名	Acs Applied Nano Materials
	2022
页码	8
DOI	10.1021/acsanm.2c01787
英文摘要	Here, we report a method or one-step generation of peculiar hybrid grating -hole nanostructures on Fe-based metallic surfaces upon irradiation with spatiotemporally modulated femtosecond lasers, i.e., orthogonal linear polarizations of time-delayed double laser beams are manipulated into a tightly spatial energy distribution by optical diffraction. It is surprisingly found that the induced surface structures not only present the highly uniform appearance but also consist of two different geometric components: the ablation subwavelength grating pattern with a spatial period of 707 nm and the well-distributed nanohole arrays on the ridge areas. Remarkably, both the grating length and the nanohole numbers can be controlled by varying the laser energy fluence. Theoretical analyses reveal that the formation of these structures can be attributed to the surface plasmon excitation and the light scattering of finite-length microstructures. Moreover, further simulation and experimental results clearly demonstrate the near-field enhancement effect of such laser-induced structures, which provides a promising way toward on-demand manipulation of the light response and detection in metadevices.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66736]
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	Z. Zhao and J. J. Yang. Hybrid Grating-Hole Nanostructures Produced by Spatiotemporal Modulation of Femtosecond Lasers: Implications for Near-Field Enhancement[J]. Acs Applied Nano Materials,2022:8.
APA	Z. Zhao and J. J. Yang.(2022).Hybrid Grating-Hole Nanostructures Produced by Spatiotemporal Modulation of Femtosecond Lasers: Implications for Near-Field Enhancement.Acs Applied Nano Materials,8.
MLA	Z. Zhao and J. J. Yang."Hybrid Grating-Hole Nanostructures Produced by Spatiotemporal Modulation of Femtosecond Lasers: Implications for Near-Field Enhancement".Acs Applied Nano Materials (2022):8.