Narrowband optical interactions in a plasmonic nanoparticle chain coupled to a metallic film
Narrowband optical interactions in a plasmonic nanoparticle chain coupled to a metallic film
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DOI：
10.1364/ol.34.001405
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发表时间：
2009-05-01
期刊：
影响因子：
3.6
通讯作者：
Martin, Olivier J. E.
中科院分区：
文献类型：
--
作者：
Brunazzo, Daniele;Descrovi, Emiliano;Martin, Olivier J. E.
我们研究了由金属纳米颗粒链和金属薄膜组成的系统中局域表面等离子体激元（LSP）和表面等离子体激元（SPP）模式的耦合。这种间隔物的厚度影响LSP和SPP模式之间的相互作用水平，并控制该系统中的电磁增强。对于适当的参数，可以观察到具有窄共振的增强。该系统的高共振品质因子和可调谐性使其成为生物传感和表面增强光谱应用的非常有前途的候选者。(C)2009年美国光学学会
We study the coupling of localized surface plasmon (LSP) and surface-plasmon polariton (SPP) modes in a system composed of a metallic nanoparticle chain separated from a thin metallic film by a dielectric spacer. The thickness of such a spacer influences the level of interaction between LSP and SPP modes and controls the electromagnetic enhancement in this system. An enhancement with narrow resonances can be observed for appropriate parameters. The high-resonance quality factor and tunability of this system make it a very promising candidate for biosensing and surface-enhanced spectroscopy applications. (C) 2009 Optical Society of America