2021/05/22 by Sunny Tiwari, Tiwari, Sunny, Chetna Taneja +3
Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Optics (physics.optics) #Soft Condensed Matter (cond-mat.soft) #cond-mat.mes-hall #cond-mat.soft #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.2105.10698
Paper is accepted in 'Materials Research Bulletin' journal
arxiv created 2021/05/22 · arxiv updated 2021/05/25
Herein, we report sub-wavelength propagation and directional out-coupling of whispering gallery modes (WGMs) of a fluorescent silica microsphere resonator mediated via plasmon polaritons in a single crystalline silver nanowire. Fluorescent spectral signatures of emission from the nanowire ends confirm efficient guiding of WGMs via nanowire plasmons. By employing Fourier plane optical microscopy, we reveal and quantify the directional fluorescence emission of WGMs from the ends of the nanowire. Given that the discussed geometry is self-assembled from a solution-phase, our results will find relevance in WGM-based soft-photonic platforms including miniaturized optical resonators and couplers.