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Article Dans Une Revue Optics Letters Année : 2017

High-quality-factor double Fabry–Perot plasmonic nanoresonator

Résumé

Fabry–Perot (FP)-like resonances have been widely described in nanoantennas. In the original FP resonator, a third mirror can be added, resulting in a multimirror interferometer. However, in the case of a combination of nanoantennas, it has been reported that each cavity behaves independently. Here, we evidence the interferences between two FP absorbing nanoantennas through a common mirror, which has a strong impact on the optical behavior. While the resonance wavelength is only slightly shifted, the level of absorption reaches nearly 100%. Moreover, the quality factor increases up to factor 7 and can be chosen by geometric design over a range from 11 to 75. We demonstrate, thanks to a simple analytical model, that this coupling can be ascribed to a double FP cavity resonance, with the unique feature that each cavity is separately coupled to the outer medium.
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Dates et versions

hal-01708885 , version 1 (14-02-2018)
hal-01708885 , version 2 (19-12-2018)

Identifiants

Citer

Baptiste Fix, Julien Jaeck, Patrick Bouchon, Sébastien Héron, Benjamin Vest, et al.. High-quality-factor double Fabry–Perot plasmonic nanoresonator. Optics Letters, 2017, 42 (24), page 5062 - 5065. ⟨10.1364/OL.42.005062⟩. ⟨hal-01708885v1⟩
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