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Refractive index sensing by using Fano resonance enhanced two‐photon luminescence
Author(s) -
Deng HaiDong,
Xu JiaLing,
Xu Yi
Publication year - 2014
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201409082
Subject(s) - fano resonance , refractive index , resonance (particle physics) , plasmon , fano plane , luminescence , surface plasmon resonance , absorption (acoustics) , optics , materials science , optoelectronics , physics , nanotechnology , nanoparticle , particle physics , mathematics , pure mathematics
Utilizing three‐dimensional vectorial electromagnetic simulation, we propose a new refractive index sensing mechanism based on Fano resonance enhanced two‐photon‐absorption induced luminescence (TPL). The TPL from gold nanodisk heptamer (GNDH), which is affected by the refractive index of surrounding material, is used as an example to demonstrate the sensing mechanism facilitated by Fano resonance. The sensitivity of our method is about one order of magnitude better than the conventional refractive index sensing strategy employing plasmonic Fano resonance, while the size of the sensing probe can be further reduced at the same time.Sketch map of the TPL sensing platform. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)