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Type: Journal article
Title: Efficient excitation of surface plasmons in metal nanorods using large longitudinal component of high index nano fibers
Author: Ruan, Y.
Afshar Vahid, S.
Monro, T.
Citation: Optics Express, 2011; 19(14):13464-13479
Publisher: Optical Soc Amer
Issue Date: 2011
ISSN: 1094-4087
Statement of
Yinlan Ruan, Shahraam Afshar V., and Tanya M. Monro
Abstract: We report theoretical calculations of the mode fields of high index lead silicate and silicon nano fibers, and show that their strong longitudinal component enables efficient excitation of surface plasmons within a silver nanorod placed at the fiber tip. An excitation efficiency 1600 times higher than that of the standard single mode fibers has been achieved using a 350nm diameter silicon fiber at 1.1μm wavelength, while a factor of 640 times higher efficiency is achieved for a 400nm diameter lead silicate F2 glass fiber. The strong localized field emerging from the end of the rod serves as a nano-scale source with adjustable beam width, and such sources offer a new approach to high-resolution microscopy, particle manipulation and sensing.
Keywords: Metals
Surface Plasmon Resonance
Scattering, Radiation
Rights: ©2011 Optical Society of America
DOI: 10.1364/OE.19.013464
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