Mapping and Quantifying Electric and Magnetic Dipole Luminescence at the nanoscale

Abstract

We report on an experimental technique to quantify the relative importance of electric and magnetic dipole luminescence from a single nanosource in structured environments. By attaching a $E{u}^{3+}$-doped nanocrystal to a near-field scanning optical microscope tip, we map the branching ratios associated to two electric dipole and one magnetic dipole transitions in three dimensions on a gold stripe. The relative weight of the electric and magnetic radiative local density of states can be recovered quantitatively, based on a multilevel model. This paves the way towards the full electric and magnetic characterization of nanostructures for the control of luminescence at the single emitter level.

arXiv comment5 pages, 4 figures

References in corpus (6)

• On-command enhancement of single molecule fluorescence using a gold nanoparticle as an optical nano-antenna
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• Scanning emitter lifetime imaging microscopy for spontaneous emission control
• Nanoscale fluorescence lifetime imaging with a single diamond NV center
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• Disorder-induced Purcell enhancement in nanoparticle chains
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• Purcell effect with extended sources: The role of the cross density of states
• Quantum Theory of Near-field Optical Imaging with Rare-earth Atomic Clusters
• Generation of nearly pure and highly directional magnetic light in fluorescence of rare earth ions
• Vectorial probing of electric and magnetic transitions in variable optical environments and vice-versa
• Magnetic and electric Purcell factor control through geometry optimization of high index dielectric nanostructures
• Deterministic relation between optical polarization and lattice symmetry revealed in ion-doped single microcrystals