Journal article
Semiconductor Surface Plasmon Sources
A Babuty, A Bousseksou, J-P Tetienne, I Moldovan Doyen, C Sirtori, G Beaudoin, I Sagnes, Y De Wilde, R Colombelli
PHYSICAL REVIEW LETTERS | AMER PHYSICAL SOC | Published : 2010
Abstract
Surface-plasmon polaritons (SPPs) are propagating electromagnetic modes bound at a metal-dielectric interface. We report on electrical generation of SPPs by reproducing the analogue in the near field of the slit-doublet experiment, in a device which includes all the building blocks required for a fully integrated plasmonic active source: an electrical generator of SPPs, a coupler, and a passive metallic waveguide. SPPs are generated upon injection of electrical current, and they are then launched at the edges of a passive metallic strip. The interference fringes arising from the plasmonic standing wave on the surface of the metallic strip are unambiguously detected with apertureless near-fie..
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Funding Acknowledgements
We thank M. Vanwolleghem, P. Lalanne, R. Carminati, D. Costantini for useful discussions. The device fabrication has been performed at the nano-center CTU-IEF-Minerve. This work was supported in part by a EURYI award [20]. It was also supported by the French National Research Agency (ANR MetalGuide, NanoFTIR) and the C'Nano IdF (PSTS).