Plasmonic Airy Beam Generated by In-Plane Diffraction
Plasmonic Airy Beam Generated by In-Plane Diffraction
复制标题
面内衍射产生的等离激元艾里光束
DOI：
10.1103/physrevlett.107.126804
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发表时间：
2011-09-15
影响因子：
8.6
通讯作者：
Zhu, S. N.
中科院分区：
文献类型：
--
作者：
Li, L.;Li, T.;Zhu, S. N.
我们报道了在银表面产生的等离子体艾里光束的实验实现。通过精心设计的纳米阵列结构，这种艾里光束来自面内传播的表面等离子体激元波，表现出非扩展，自弯曲和自我修复的特性。此外，提出了一种基于非完全匹配衍射过程的相位调谐方法，实现了光束的任意产生和调制。这种独特的等离子体艾里光束及其产生方法将显著促进面内表面等离子体极化激元操纵的发展，并在实验室芯片光子集成中具有潜在的应用前景。
We report an experimental realization of a plasmonic Airy beam, which is generated thoroughly on a silver surface. With a carefully designed nanoarray structure, such Airy beams come into being from an in-plane propagating surface plasmon polariton wave, exhibiting nonspreading, self-bending, and self-healing properties. Besides, a new phase-tuning method based on nonperfectly matched diffraction processes is proposed to generate and modulate the beam almost at will. This unique plasmonic Airy beam as well as the generation method would significantly promote the evolutions in in-plane surface plasmon polariton manipulations and indicate potential applications in lab-on-chip photonic integrations.