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Updated: Jun 12, 2026

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
Published on: July 8, 2013
Plasmonic light-harvesting devices over the whole visible spectrum
Alexandre Aubry1, Dang Yuan Lei, Antonio I Fernández-Domínguez
1The Blackett Laboratory, Department of Physics, Imperial College London, London, UK. a.aubry@imperial.ac.uk
Abstract:
On the basis of conformal transformation, a general strategy is proposed to design plasmonic nanostructures capable of an efficient harvesting of light over a broadband spectrum. The surface plasmon modes propagate toward the singularity of these structures where the group velocity vanishes and energy accumulates. A considerable field enhancement and confinement is thus expected. Radiation losses are also investigated when the structure dimension becomes comparable to the wavelength.
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