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首页> 外文会议>Photonic and phononic properties of engineered nanostructures III >Enhanced Localized Surface Plasmonic Resonances in Dielectric Photonic Band-Gap Structures: Fabry-Perot Nanocavities Photonic Crystal Slot Waveguides
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Enhanced Localized Surface Plasmonic Resonances in Dielectric Photonic Band-Gap Structures: Fabry-Perot Nanocavities Photonic Crystal Slot Waveguides

机译：介电光子带隙结构中增强的局部表面等离子体共振：法布里-珀罗纳米腔和光子晶体缝隙波导

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摘要

We describe approaches to enhance localized surface plasmons by placing metallic nanoparticles into two different structures: (ⅰ) Fabry-Perot (F-P) resonant cavities, and (ⅱ) Photonic crystal slot waveguides. Through synchronization of the plasmonic and resonant modes, electric field at the surface of the nanoparticles is enhanced by a factor of 4～20 compared with the nanoparticles in free space, depending on the device structure and coupling mechanism. We report key differences between the F-P enhancement and the slow-light enhancement to the plasmonic effect in details. This theoretical investigation reveals a new method to strengthen plasmonic resonances and suggests that the sensitivity of existing plasmonic sensors can be further improved if they are integrated with dielectric resonant photonic devices.
机译：我们描述了通过将金属纳米颗粒放入两个不同的结构来增强局部表面等离子体激元的方法：（ⅰ）法布里-珀罗（F-P）谐振腔，以及（ⅱ）光子晶体缝隙波导。通过等离子和共振模态的同步，纳米粒子表面的电场与自由空间中的纳米粒子相比提高了4〜20倍，这取决于器件的结构和耦合机理。我们详细报告了F-P增强和慢波增强对等离激元效应之间的关键差异。这项理论研究揭示了一种增强等离子体共振的新方法，并表明，如果将现有的等离子体传感器与介电共振光子器件集成在一起，则可以进一步提高其灵敏度。

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