Terahertz wedge plasmon polaritons

We propose a metamaterial approach to route terahertz waves that features subwavelength confinement in the transverse plane. The guiding mechanism is based on geometrically induced electromagnetic modes sustained by corrugated metallic wedges, whose characteristics resemble those of wedge plasmon po...

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Veröffentlicht in:	Optics letters 2009-07, Vol.34 (13), p.2063-2065
Hauptverfasser:	FERNANDEZ-DOMINGUEZ, A. I, MORENO, Esteban, MARTIN-MORENO, L, GARCIA-VIDAL, F. J
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Circuit properties Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Electric, optical and optoelectronic circuits Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Electronics Exact sciences and technology Fundamental areas of phenomenology (including applications) Integrated optics. Optical fibers and wave guides Optical and optoelectronic circuits Optical elements, devices, and systems Optical waveguides and coupleurs Optics Physics Surface and interface electron states
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Beschreibung
Zusammenfassung:	We propose a metamaterial approach to route terahertz waves that features subwavelength confinement in the transverse plane. The guiding mechanism is based on geometrically induced electromagnetic modes sustained by corrugated metallic wedges, whose characteristics resemble those of wedge plasmon polaritons at telecom and optical frequencies. Additionally, frequency selective focusing and slowing down of terahertz radiation based on the proposed wedge waveguides are presented.
ISSN:	0146-9592 1539-4794
DOI:	10.1364/OL.34.002063