Relating localized nanoparticle resonances to an associated antenna problem

Shakeeb Bin Hasan, Robert Filter, Aftab Ahmed, Ralf Vogelgesang, Reuven Gordon, Carsten Rockstuhl, Falk Lederer

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

On an empirical basis, we indicate the possibility of conceptually unifying the description of resonances existing in some of the analytically studied metallic nanoparticles and optical nanowire antennas. To this end the nanoantenna is treated as a Fabry-Pérot-like resonator with arbitrary seminanoparticles forming the terminations. We show that the frequencies of the quasistatic dipolar resonances of the considered nanoparticles coincide with those where the round-trip phase of the complex reflection coefficient of the fundamental propagating plasmon polariton mode at the wire terminations amounts to 2π. The lowest order Fabry-Pérot resonance of the optical wire antenna occurs therefore even for a negligible wire length.

Original languageEnglish (US)
Article number195405
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number19
DOIs
StatePublished - Nov 2 2011
Externally publishedYes

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