Launching surface plasmon waves via vanishingly small periodic gratings.
Launching surface plasmon waves via vanishingly small periodic gratings.
复制标题
通过微小的周期性光栅发射表面等离子体波。
DOI：
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发表时间：
2016
影响因子：
1.9
通讯作者：
F. Reitich
中科院分区：
文献类型：
--
作者：
D. Nicholls;Sang‐Hyun Oh;T. Johnson;F. Reitich
电磁波通过周期性层状介质的散射在光学和光子学的许多应用中起着至关重要的作用，特别是在纳米等离子体激元学中，用于诸如非凡的光传输、光子晶体、超材料和表面等离子体激元共振生物传感等各种主题。考虑到这些应用，我们专注于表面等离子体共振激发的背景下，绝缘体金属结构的周期性，波纹界面。这一贡献的目的是研究产生这些根本性的重要现象所需的几何限制。为此，我们使用强大的，快速的，高精度的场展开方法来研究这些微妙的现象，并证明如何非常小的扰动（例如，在530nm周期光栅上的5nm偏差）可以产生强（在这种情况下为20%）等离子体吸收，以及消失的小扰动（例如，在530nm周期光栅上的1nm偏差）可以产生非平凡（在这种情况下为1%）等离子体吸收。
The scattering of electromagnetic waves by periodic layered media plays a crucial role in many applications in optics and photonics, in particular in nanoplasmonics for topics as diverse as extraordinary optical transmission, photonic crystals, metamaterials, and surface plasmon resonance biosensing. With these applications in mind, we focus on surface plasmon resonances excited in the context of insulator-metal structures with a periodic, corrugated interface. The object of this contribution is to study the geometric limits required to generate these fundamentally important phenomena. For this we use the robust, rapid, and highly accurate field expansions method to investigate these delicate phenomena and demonstrate how very small perturbations (e.g., a 5 nm deviation on a 530 nm period grating) can generate strong (in this instance 20%) plasmonic absorption, and vanishingly small perturbations (e.g., a 1 nm deviation on a 530 nm period grating) can generate nontrivial (in this instance 1%) plasmonic absorption.
影响因子：
17.1
作者：
Im H;Lee SH;Wittenberg NJ;Johnson TW;Lindquist NC;Nagpal P;Norris DJ;Oh SH
通讯作者：
Oh SH