Shaping the fluorescence emission by cavity plasmons in dielectric-metal core-shell resonators

We observe experimentally the spectral and spatial reshaping of fluorescence emission in dye-doped dielectric-metal core-shell resonators that support multipolar electric and magnetic-based cavity plasmon resonances. By comparing the experimental fluorescence spectra with analytical calculations bas...

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Bibliographic Details
Published in:Applied physics letters 2015-12, Vol.107 (25)
Main Authors: Li, Zhi-Qin, Zhang, Chi, Gu, Ping, Wan, Mingjie, Zhan, Peng, Chen, Zhuo, Wang, Zhenlin
Format: Article
Language:English
Subjects:
Applied physics
Cavity resonators
Coupling (molecular)
Dyes
Emission
Fluorescence
Magnetic resonance
Mie scattering
Plasmons
Resonators
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Summary:We observe experimentally the spectral and spatial reshaping of fluorescence emission in dye-doped dielectric-metal core-shell resonators that support multipolar electric and magnetic-based cavity plasmon resonances. By comparing the experimental fluorescence spectra with analytical calculations based on Mie theory, we are able to demonstrate that the strong reshaping effects are the results of the coupling of dye molecules to those narrow-band cavity plasmon resonances. In addition, we show that the polarization of the fluorescence emission can also be modified by selectively coupling the molecules to the magnetic or electric based cavity plasmons.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4938393