Coupling and Guided Propagation along Parallel Chains of Plasmonic Nanoparticles

Abstract

Here, extending our previous work on this topic, we derive a dynamic closed-form dispersion relation for a rigorous analysis of guided wave propagation along coupled parallel linear arrays of plasmonic nanoparticles, operating as optical 'two-line' waveguides. Compared to linear arrays of nanoparticles, our results suggest that these waveguides may support longer propagation lengths and more confined beams, operating analogously to transmission-line segments at lower frequencies. Our formulation fully takes into account the whole dynamic interaction among the infinite number of nanoparticles composing the parallel arrays, considering also realistic presence of losses and the frequency dispersion of the involved plasmonic materials, providing further physical insights into the guidance properties that characterize this geometry.

34 pages, 11 figures

References in corpus (5)

• Circuit elements at optical frequencies: nano-inductors, nano-capacitors and nano-resistors
• Theory of Linear Chains of Metamaterial/Plasmonic Particles as Sub-Diffraction Optical Nanotransmission Lines
• Complex response and polariton-like dispersion splitting in periodic metal nanoparticle chains
• Optical Nanotransmission Lines: Synthesis of Planar Left-Handed Metamaterials in the Infrared and Visible Regimes
• Resonance shift effects in apertureless scanning near-field optical microscopy

Cited by in corpus (4)

• Graphene Plasmons in Triangular Wedges and Grooves
• Disorder-induced Purcell enhancement in nanoparticle chains
• Coherent magnetic plasmon modes in a contacting gold nano-sphere chain on a gold Slab
• Control of the stability and soliton formation of dipole moments in a nonlinear plasmonic finite nanoparticle array