期刊
OPTICS EXPRESS
卷 15, 期 21, 页码 14266-14274出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.15.014266
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The fluorescence from a single molecule can be strongly enhanced near a metal nanoparticle acting as an optical antenna. We demonstrate the spectral tunability of this antenna effect and show that maximum enhancement is achieved when the emission frequency is red-shifted from the surface plasmon resonance of the particle. Our experimental results, using individual gold and silver particles excited at different laser-frequencies, are in good agreement with an analytical theory which predicts a different spectral dependence of the radiative and non-radiative decay rates. (c) 2007 Optical Society of America.
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