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Gold, Copper, Silver and Aluminum Nanoantennas to Enhance Spontaneous Emission

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Mohammadi, A., Sandoghdar, V., & Agio, M. (2009). Gold, Copper, Silver and Aluminum Nanoantennas to Enhance Spontaneous Emission. Journal of Computational and Theoretical Nanoscience, 6, 2024-2030. doi:10.1166/jctn.2009.1259.


Cite as: http://hdl.handle.net/21.11116/0000-0002-9A64-0
Abstract
We compute the decay rates of emitters coupled to spheroidal nanoantennas made of gold, copper, silver, and aluminum. The spectral position of the localized surface plasmon-polariton resonance, the enhancement factors and the quantum efficiency are investigated as a function of the aspect ratio, background index and the metal composing the nanoantenna. While copper yields results similar to gold, silver and aluminum exhibit different performances. Our results show that with a careful choice of the parameters these nanoantennas can enhance emitters ranging from the UV to the near-IR spectrum.