Manipulation of plasmonic wavefront and light–matter interaction in metallic nanostructures: A brief review |
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引用本文: | 李家方,李志远.Manipulation of plasmonic wavefront and light–matter interaction in metallic nanostructures: A brief review[J].中国物理 B,2014(4):25-40. |
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作者姓名: | 李家方 李志远 |
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基金项目: | Project supported by the National Basic Research Program of China(Grant Nos.2013CB632704 and 2013CB922404);the Knowledge Innovation Program ofthe Chinese Academy of Sciences(Grant No.KJCX2-EW-W02);the National Natural Science Foundation of China(Grant Nos.11104342 and 11374357) |
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摘 要: | The control and application of surface plasmons (SPs), is introduced with particular emphasis on the manipulation of the plasmonic wavefront and light-matter interaction in metallic nanostructures. We introduce a direct design methodology called the surface wave holography method and show that it can be readily employed for wave-front shaping of near-infrared light through a subwavelength hole, it can also be used for designing holographic plasmonic lenses for SPs with complex wavefronts in the visible band. We also discuss several issues of light-matter interaction in plasmonic nanostructures. We show theoretically that amplification of SPs can be achieved in metal nanoparticles incorporated with gain media, leading to a giant reduction of surface plasmon resonance linewidth and enhancement of local electric field intensity. We present an all-analytical semiclassical theory to evaluate spaser performance in a plasmonic nanocavity incorporated with gain media described by the four-level atomic model. We experimentally demonstrate amplified spontaneous emission of SP polaritons and their amplification at the interface between a silver film and a polymer film doped with dye molecules. We discuss various aspects of microscopic and macroscopic manipulation of fluorescent radiation from gold nanorod hybrid structures in a system of either a single nanoparticle or an aligned group of nanoparticles. The findings reported and reviewed here could help others explore various approaches and schemes to manipulate plasmonic wavefront and light-matter interaction in metallic nanostructures for potential applications, such as optical displays, information integration, and energy harvesting technologies.
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关 键 词: | 金属纳米颗粒 纳米结构 相互作用 波前像差 电浆 物质 操纵 表面等离子体 |
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