A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings

doi:10.3390/molecules24112038

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	A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings
	B.Zhao; Z.F.Huang; J.J.Yang; L.Zhang; R.S.Joshya; C.L.Guo
	2019
发表期刊	Molecules
卷号	24 期号:11 页码:11
摘要	Overcoming the disadvantages of low transmission and broad peak bandwidth of previously reported plasmonic color filters, a high-efficiency multispectral plasmonic color filter is theoretically proposed with two cascaded ultrathin metallic nanogratings separated by two heterogeneous dielectric layers, and its optical properties are theoretically investigated using the finite-difference time-domain method. The transmission spectrum presents three near-unity peak bands accompanied with three near-null dip bands adjacent around them. Both transmission efficiencies of above 90% and ultranarrow peak bandwidth of 20 nm are achieved in the visible regime. The peak band positions can be flexibly tailored by varying the structural parameters. The filter selects the visible color with high signal noise ratio at the peak bands. The outstanding spectral properties of this filter indicate significant improvement for the high-accuracy color filtering and multispectral imaging applications. The simulated near-field electromagnetic distributions suggest that the excitation of the hybrid antisymmetric surface plasmon polariton (SPP) leaky mode and metal-insulator-metal waveguide modes are responsible for the peak transmission bands, while the formation of the hybrid SPP bound modes confined on the bottom nanograting makes the dip transmission bands, all of which are the consequence of the plasmonic hybridization between the two neighboring metallic nanogratings.
关键词	surface plasmon polariton (SPP),metal-insulator-metal (MIM) structures,leaky and bound mode,waveguide mode,multispectral filter,plasmonic,hybridization,transmission,transparency,resonances,metals,arrays,light,Biochemistry & Molecular Biology,Chemistry
DOI	10.3390/molecules24112038
收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62763
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	B.Zhao,Z.F.Huang,J.J.Yang,et al. A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings[J]. Molecules,2019,24(11):11.
APA	B.Zhao,Z.F.Huang,J.J.Yang,L.Zhang,R.S.Joshya,&C.L.Guo.(2019).A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings.Molecules,24(11),11.
MLA	B.Zhao,et al."A High-Efficiency Multispectral Filter Based on Plasmonic Hybridization between Two Cascaded Ultrathin Nanogratings".Molecules 24.11(2019):11.

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