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You are here: Home Publications Publications Area A Fluorescence enhancement by a dark plasmon mode

Manuel Peter, Julia FM Werra, Cody Friesen, Doreen Achnitz, Kurt Busch, and Stefan Linden (2018)

Fluorescence enhancement by a dark plasmon mode

Applied Physics B, 124(5):83.

<p>We investigate the fluorescence properties of colloidal quantum dots coupled to gold nanowire antennas. By varying the wire 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 the bright dipole plasmon mode and the dark quadrupol plasmon mode, respectively. This interpretation is supported by numerical calculations of the far-field scattering spectra and the radiation rates.</p>

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