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PubMed · 12641764

Surface plasmon polariton waveguiding in random surface nanostructures.

S I Bozhevolnyi·V S Volkov·K Leosson·A Boltasseva
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Abstract

In this study, guiding of surface plasmon polaritons excited at a gold film surface along corrugation-free channels in regions that are covered with randomly located surface scatterers, is considered using near-field microscopy for imaging of surface plasmon polariton intensity distributions at the surface. In the wavelength range 713-815 nm, we observed complete inhibition of the surface plasmon polariton propagation inside the random structures composed of individual ( approximately 70 nm high) gold bumps (and their clusters) placed on a 55 nm thick gold film with a bump density of 75 micro m-2. We demonstrate well-defined surface plasmon polariton guiding along corrugation-free 2 micro m wide channels in random structures and, in the wavelength range 738-774 nm, low-loss guiding around 20 degrees bends having a bend radius of approximately 15 micro m.

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GoldLightMicroscopy, Electron, ScanningNanotechnologyParticle SizeScattering, RadiationSurface Plasmon ResonanceJournal Article

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S I Bozhevolnyi, V S Volkov, K Leosson, A Boltasseva. 2003. Surface plasmon polariton waveguiding in random surface nanostructures.. https://doi.org/10.1046/j.1365-2818.2003.01109.x

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