2011/09/25 by Martin Frimmer, Toon Coenen, A. Femius Koenderink · 115 citations
Engineering · Materials Science · Physics and Astronomy · #Cathodoluminescence #Condensed matter physics #Excitation #Fano plane #Fano resonance #Gold and Silver Nanoparticles Synthesis and Applications #Interference (communication) #Local density of states #Local field #Molecular physics #Near and far field #Optics #Orbital Angular Momentum in Optics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Quantum mechanics #Radiative transfer #Telecommunications #physics.optics
paper · pdf · doi:10.1103/physrevlett.108.077404
published in Physical Review Letters 108(7), 077404 (American Physical Society)
arxiv created 2011/09/25 · openalex publication_date 2012/02/17 · arxiv updated 2012/08/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present measurements on plasmonic metamolecules under local excitation using cathodoluminescence which show a spatial redistribution of the local density of optical states at the same frequency where a sharp spectral Fano feature in extinction has been observed. Our analytical model shows that both near- and far-field effects arise due to interference of the same two eigenmodes of the system. We present quantitative insights both in a bare state, and in a dressed state picture that describe Fano interference either as near-field amplitude transfer between coupled bare states, or as interference of uncoupled eigenmodes in the far field. We identify the same eigenmode causing a dip in extinction to strongly enhance the radiative local density of optical states, making it a promising candidate for spontaneous emission control.