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Control of the external photoluminescent quantum yield of emitters coupled to nanoantenna phased arrays

Opened Access Control of the external photoluminescent quantum yield of emitters coupled to nanoantenna phased arrays

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Autor: Guo, Ke
Lozano, Gabriel
Gómez Rivas, Jaime
Verschuuren, Marc A.
Fecha: 2015
Publicado en: Journal of Applied Physics, 118, 1-7.
Tipo de documento: Artículo
Resumen: Optical losses in metals represent the largest limitation to the external quantum yield of emitters coupled to plasmonic antennas. These losses can be at the emission wavelength, but they can be more important at shorter wavelengths, i.e., at the excitation wavelength of the emitters, where the conductivity of metals is usually lower. We present accurate measurements of the absolute external photoluminescent quantum yield of a thin layer of emitting material deposited over a periodic nanoantenna phased array. Emission and absorptance measurements of the sample are performed using a custom-made setup including an integrating sphere and variable angle excitation. The measurements reveal a strong dependence of the external quantum yield on the angle at which the optical field excites the sample. Such behavior is attributed to the coupling between far-field illumination and near-field excitation mediated by the collective resonances supported by the array. Numerical simulations confirm th...
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Cita: Guo, K., Lozano, G., Gómez Rivas, J. y Verschuuren, M.A. (2015). Control of the external photoluminescent quantum yield of emitters coupled to nanoantenna phased arrays. Journal of Applied Physics, 118, 1-7.
Tamaño: 2.313Mb
Formato: PDF

URI: https://hdl.handle.net/11441/72285

DOI: 10.1063/1.4928616

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