Broad Band Focusing and Demultiplexing of In-Plane Propagating Surface Plasmons

On the basis of a novel phase modulation method by in-plane diffraction processes, a well-designed nanoarray on metal surface is proposed to realize a broad band focusing (bandwidth ∼100 nm) and a demultiplexing element (resolution ∼12 nm) of surface plasmon polariton (SPP) waves. Moreover, sublatti...

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Veröffentlicht in:	Nano letters 2011-10, Vol.11 (10), p.4357-4361
Hauptverfasser:	Li, Lin, Li, Tao, Wang, Shuming, Zhu, Shining, Zhang, Xiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Arrays Beams (radiation) Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Confocal Demultiplexers Demultiplexing Diffraction Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Focusing Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Nanostructure Physics Plasmons Surface and interface electron states Surfaces and interfaces thin films and whiskers (structure and nonelectronic properties)
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Zusammenfassung:	On the basis of a novel phase modulation method by in-plane diffraction processes, a well-designed nanoarray on metal surface is proposed to realize a broad band focusing (bandwidth ∼100 nm) and a demultiplexing element (resolution ∼12 nm) of surface plasmon polariton (SPP) waves. Moreover, sublattice arrays are developed to achieve an improved demultiplexer and confocal SPP beams. The proposed scheme with implemented functionalities is designed totally in planar dimension, which is free of the SPP coupling process and indicates more practical application in photonic integrations.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl2024855