Plasmonic light-harvesting devices over the whole visible spectrum.
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.
The Blackett Laboratory, Department of Physics, Imperial College London, London, UK. a.aubry@imperial.ac.uk
Alexandre
A
Aubry
Dang Yuan
DY
Lei
Antonio I
AI
Fernández-Domínguez
Yannick
Y
Sonnefraud
Stefan A
SA
Maier
J B
JB
Pendry