Crucial role of the emitter–particle distance on the directivity of optical antennas: Brice Rolly, Brian Stout, Sebastien Bidault, Nicolas Bonod
We demonstrate that the reflecting properties of a single particle nanoantenna can be extremely sensitive to its distance from a quantum emitter at frequencies lower than the plasmon resonance. The phenomenon is shown to arise from rapid phase variations of the emitter field at short distances ... [Opt. Lett. 36, 3368-3370 (2011)]
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