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Updated: Apr 6, 2026

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Helicity-Driven Ratchet Effect Enhanced by Plasmons
I V Rozhansky1,2, V Yu Kachorovskii1,3, M S Shur3
1A.F. Ioffe Physical Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia.
Abstract:
We demonstrate that the ratchet effect-a radiation-induced direct current in periodically modulated structures with built-in asymmetry-is dramatically enhanced in the vicinity of the plasmonic resonances and has a nontrivial polarization dependence. For a circular polarization, the current component, perpendicular to the modulation direction, changes sign with the inversion of the radiation helicity. In the high-mobility structures, this component might increase by several orders of magnitude due to the plasmonic effects and exceed the current component in the modulation direction. Our theory also predicts that in the dirty systems, where the plasma resonances are suppressed, the ratchet current is controlled by the Maxwell relaxation.
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