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Negative refractive index in coaxial plasmon waveguides

de Waele, René and Burgos, Stanley P. and Atwater, Harry A. and Polman, Albert (2010) Negative refractive index in coaxial plasmon waveguides. Optics Express, 18 (12). pp. 12770-12778. ISSN 1094-4087. doi:10.1364/OE.18.012770.

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We theoretically show that coaxial waveguides composed of a metallic core, surrounded by a dielectric cylinder and clad by a metal outer layer exhibit negative refractive index modes over a broad spectral range in the visible. For narrow dielectric gaps (10 nm GaP embedded in Ag) a figure-of-merit of 18 can be achieved at λ_0 = 460 nm. For larger dielectric gaps the negative index spectral range extends well below the surface plasmon resonance frequency. By fine-tuning the coaxial geometry the special case of n = −1 at a figure-of-merit of 5, or n = 0 for a decay length of 500 nm can be achieved.

Item Type:Article
Related URLs:
URLURL TypeDescription
Atwater, Harry A.0000-0001-9435-0201
Polman, Albert0000-0002-0685-3886
Additional Information:© 2010 Optical Society of America. Received 12 Apr 2010; accepted 14 May 2010; published 28 May 2010.
Group:Kavli Nanoscience Institute
Issue or Number:12
Classification Code:OCIS codes: (240.6680) Optics at surfaces; (160.3918) Metamaterials; (222.0220) Optical design and fabrication.
Record Number:CaltechAUTHORS:20100630-151450494
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Official Citation:René de Waele, Stanley P. Burgos, Harry A. Atwater, and Albert Polman, "Negative refractive index in coaxial plasmon waveguides," Opt. Express 18, 12770-12778 (2010)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:18884
Deposited By: Tony Diaz
Deposited On:15 Jul 2010 21:47
Last Modified:08 Nov 2021 23:47

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