期刊
OPTICS EXPRESS
卷 23, 期 24, 页码 30739-30748出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.23.030739
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- Air Force Office of Scientific Research (AFOSR) [FA9550-14-1-0196]
The fact that surface-induced damping rate of surface plasmon polaritons (SPPs) in metal nanoparticles increases with the decrease of particle size is well known. We show that this rate also increases with the degree of the mode confinement, hence damping of the higher order nonradiative SPP modes in spherical particles is greatly enhanced relative to damping of the fundamental (dipole) SPP mode. Since higher order modes are the ones responsible for quenching of luminescence in the vicinity of metal surfaces, the degree of quenching increases resulting in a substantial decrease in the amount of attainable enhancement of the luminescence. (c) 2015 Optical Society of America
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