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arXiv · 1710.02832

Fluorescence enhancement by dark plasmon modes

Manuel Peter·Julia F. M. Werra·Cody Friesen·Doreen Achnitz·Kurt Busch·Stefan Linden
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Abstract

We investigate the fluorescence properties of colloidal quantum dots attached to gold rod nanoantennas. These structures are fabricated by a two step electron beam lithography process in combination with a chemical linking method. By varying the nanoantenna length, the plasmon modes of the nanoantennas are successively tuned through the emission band of the quantum dots. We observe a pronounced fluorescence enhancement both for short and long nanoantennas. These findings can be attributed to the coupling of the quantum dots to bright and dark plasmon modes, respectively.

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Manuel Peter, Julia F. M. Werra, Cody Friesen, Doreen Achnitz, Kurt Busch, Stefan Linden. 2017-10-08. Fluorescence enhancement by dark plasmon modes. https://doi.org/10.1007/s00340-018-6953-6

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