Plasmonic resonance effects for tandem receiving-transmitting nanoantennas.

Ginzburg, Pavel; Nevet, Amir; Berkovitch, Nikolai; Normatov, Alexander; Lerman, Gilad M; Yanai, Avner; Levy, Uriel; Orenstein, Meir · Nano Lett · 2011

basic_science · Level V

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Abstract

A nanoplasmonic "transceiver" was assembled to examine the efficiency of coupled plasmonic antennas and their resonance interactions. In particular, plasmonic focusing receiver antenna coupled to transmitting annular antenna having a short central plasmonic wire was measured. The receiver collected incoming radially polarized light and efficiently focused and coupled it to a rear side transmitter comprised of a short resonant plasmonic wire and annular aperture. Transmission spectra exhibited a substantial signature of the wire Fabry-Perot resonances. The wire antenna crossection was improved by nearly 3 orders of magnitude by the focusing antenna system.