Differentiating the contributions between localized surface plasmon and surface plasmon polariton on a one-dimensional metal grating in coupling with a light emitter
Differentiating the contributions between localized surface plasmon and surface plasmon polariton on a one-dimensional metal grating in coupling with a light emitter
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DOI：
10.1063/1.2906363
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发表时间：
2008-03-31
影响因子：
4
通讯作者：
Kiang, Yean-Woei
中科院分区：
文献类型：
--
作者：
Chuang, Wen-Hung;Wang, Jyh-Yang;Kiang, Yean-Woei
作者证明了局部表面等离子体（LSP）的贡献与表面等离子体极化子（SPP）耦合，并在金属光栅结构中发射偶极子对发射增强的贡献。由于SPP模式的损失相对较高和平面辐射，LSP模式主导了增强效应。但是，由于LSP共振能对金属/介电界面几何形状敏感，因此可能很难精确地实现特定的几何形状并实现基于LSP耦合的所需发射波长的发射增强。另一方面，由于可以通过光栅结构的周期来控制SPP功能，因此在实用设备中实现SPP耦合以增强发射功能可能更可行。 （c）2008年美国物理研究所。
The authors demonstrate the differentiation between the contributions of localized surface plasmon (LSP) and surface plasmon polariton (SPP) couplings with an emitting dipole to emission enhancement in a metallic grating structure. Because of the relatively higher loss and in-plane radiation of the SPP modes, the LSP modes dominate the enhancement effect. However, because the LSP resonance energy is sensitive to the metal/dielectric interface geometry, it may be difficult to precisely implement a particular geometry and achieve the emission enhancement of a desired emission wavelength based on the LSP coupling. On the other hand, because the SPP feature can be controlled by the period of a grating structure, the implementation of the SPP coupling for emission enhancement in a practical device can be more feasible. (C) 2008 American Institute of Physics.