Spectral tunability of a plasmonic antenna with a dielectric nanocrystal.
OPTICS EXPRESS(2011)
摘要
We show that the positioning of a nanometer length scale dielectric object, such as a diamond nanocrystal, in the vicinity of a gold bowtie nanoantenna can be used to tune the plasmonic mode spectrum on the order of a linewidth. We further show that the intrinsic luminescence of gold enhanced in the presence of nanometer-scale roughness couples efficiently to the plasmon mode and carries the same polarization anisotropy. Our findings have direct implications for cavity quantum electrodynamics related applications of hybrid antenna-emitter complexes. (C) 2011 Optical Society of America
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关键词
spectrum,plasmonics,surface plasmons,cavity quantum electrodynamics,physical optics,length scale
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