等离子体子
格子(音乐)
波长
表面等离子体子
光学
光电子学
表面等离子共振
纳米结构
极化(电化学)
材料科学
物理
凝聚态物理
纳米技术
化学
纳米颗粒
物理化学
声学
作者
M. Saad Bin-Alam,Orad Reshef,Raja Ahmad,Jeremy Upham,Mikko J. Huttunen,Ksenia Dolgaleva,Robert W. Boyd
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-04-14
卷期号:47 (8): 2105-2105
被引量:4
摘要
Multiresonant metasurfaces could enable many applications in filtering, sensing, and nonlinear optics. However, developing a metasurface with more than one high-quality-factor or high-Q resonance at designated resonant wavelengths is challenging. Here, we experimentally demonstrate a plasmonic metasurface exhibiting different, narrow surface lattice resonances by exploiting the polarization degree of freedom where different lattice modes propagate along different dimensions of the lattice. The surface consists of aluminum nanostructures in a rectangular periodic lattice. The resulting surface lattice resonances were measured around 640 nm and 1160 nm with Q factors of ∼50 and ∼800, respectively. The latter is a record-high plasmonic Q factor within the near-infrared type-II window. Such metasurfaces could benefit such applications as frequency conversion and all-optical switching.
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