Nanofocusing with Channel Plasmon Polaritons

Nanofocusing with Channel Plasmon Polaritons

We investigate radiation nanofocusing with channel plasmon polaritons (CPPs) propagating along subwavelength metal grooves that are tapered synchronously in depth and in width. Efficient CPP nanofocusing at telecom wavelengths with the estimated field intensity enhancement of up to ∼90 is directly d...

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Veröffentlicht in:Nano letters 2009-03, Vol.9 (3), p.1278-1282
Hauptverfasser: Volkov, Valentyn S, Bozhevolnyi, Sergey I, Rodrigo, Sergio G, Martín-Moreno, Luis, García-Vidal, Francisco J, Devaux, Eloïse, Ebbesen, Thomas W
Format: Artikel
Sprache:eng
Schlagworte:
Equipment Design
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Image Enhancement - instrumentation
Metal Nanoparticles - chemistry
Metals - chemistry
Microscopy - methods
Microscopy, Electron, Scanning - methods
Models, Statistical
Nanoparticles - chemistry
Nanotechnology - methods
Optical workshop techniques
Optics
Physics
Surface Plasmon Resonance
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Zusammenfassung:We investigate radiation nanofocusing with channel plasmon polaritons (CPPs) propagating along subwavelength metal grooves that are tapered synchronously in depth and in width. Efficient CPP nanofocusing at telecom wavelengths with the estimated field intensity enhancement of up to ∼90 is directly demonstrated using near-field microscopy. Experimental observations are concurred with electromagnetic simulations, predicting the possibility of reaching the intensity enhancements of ∼1200 and opening thereby exciting perspectives for practical applications of CPP nanofocusing.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl900268v