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Controlling steady-state second harmonic signal via linear and nonlinear Fano resonances
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Date
2020-01-02
Author
Guenay, Mehmet
Artvin, Zafer
Bek, Alpan
TAŞGIN, MEHMET EMRE
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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Nonlinear signal even from a single molecule becomes visible at hot spots of plasmonic nanoparticles. In these structures, Fano resonances can control the nonlinear response in two ways. (i) A linear Fano resonance can enhance the hot spot field, resulting enhanced nonlinear signal. (ii) A nonlinear Fano resonance can enhance the nonlinear signal without enhancing the hot spot. In this study, we compare the enhancement of second harmonic signal at the steady-state obtained via these two methods. Since we are interested in the steady-state signal, we adapt a linear enhancement which works at the steady-state. This is different than the dark-hot resonances that appear in the transparency window due to enhanced plasmon lifetime.
Subject Keywords
Quantum plasmonics
,
Nonlinear optics
,
Fano resonance
URI
https://hdl.handle.net/11511/44378
Journal
JOURNAL OF MODERN OPTICS
DOI
https://doi.org/10.1080/09500340.2018.1554750
Collections
Department of Physics, Article