Article

Surface plasmon polariton amplification upon electrical injection in highly integrated plasmonic circuits.

Laboratory of Nanooptics and Femtosecond Electronics, Department of General Physics, Moscow Institute of Physics and Technology (State University), 9 Institutsky Lane, Dolgoprudny 141700, Russian Federation.
Nano Letters (Impact Factor: 13.03). 03/2012; 12(5):2459-63. DOI: 10.1021/nl300540x
Source: PubMed

ABSTRACT We propose a very efficient approach for amplification of surface plasmon polaritons (SPPs) in a nanoscale waveguiding geometry with strong (∼λ/10) mode confinement. The implemented scheme of electric pumping is based on a single-heterostructure Schottky-barrier diode and has been numerically shown to ensure full compensation of the SPP propagation losses at wavelengths around 3 μm and, moreover, to provide net SPP gain. The presented concept creates the backbone for the implementation of highly integrated large-scale hybrid electronic-plasmonic circuits operating at extremely high speeds and opens the prospects for the realization of integrated coherent SPP sources.

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