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arXiv · 1109.3943

Giant terahertz near-field enhancement by two-dimensional plasmons

Arthur R. Davoyan·Vyacheslav V. Popov·Sergey A. Nikitov
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Abstract

We consider a periodically gated two-dimensional electron system, with a central gate finger biased independently creating a tunable plasmonic cavity in a planar plasmonic crystal. We demonstrate that the plasmons resonantly excited in the periodic plasmonic lattice by incident terahertz radiation can strongly pump the cavity plasmon modes leading to a deep sub-wavelength concentration of terahertz energy with giant electric field enhancement factor up to 10000.

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Arthur R. Davoyan, Vyacheslav V. Popov, Sergey A. Nikitov. 2011-09-21. Giant terahertz near-field enhancement by two-dimensional plasmons. https://doi.org/10.1103/physrevlett.108.127401

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