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arXiv · 1402.5244

Fluorescence Excitation by Enhanced Plasmon Upconversion under Continuous Wave Illumination

Mehmet Emre Tasgin·Ildar Salakhutdinov·Dania Kendziora·Musa Kurtulus Abak·Deniz Turkpence·Luca Piantanida·Ljiljana Fruk·Marco Lazzarino·Alpan Bek
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Abstract

We demonstrate effective background-free continuous wave nonlinear optical excitation of molecules that are sandwiched between asymmetrically constructed plasmonic gold nanoparticle clusters. We observe that near infrared photons are converted to visible photons through efficient plasmonic second harmonic generation. Our theoretical model and simulations demonstrate that Fano resonances may be responsible for being able to observe nonlinear conversion using a continuous wave light source. We show that nonlinearity enhancement of plasmonic nanostructures via coupled quantum mechanical oscillators such as molecules can be several orders larger as compared to their classical counterparts.

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Mehmet Emre Tasgin, Ildar Salakhutdinov, Dania Kendziora, Musa Kurtulus Abak, Deniz Turkpence, Luca Piantanida, Ljiljana Fruk, Marco Lazzarino, Alpan Bek. 2014-02-21. Fluorescence Excitation by Enhanced Plasmon Upconversion under Continuous Wave Illumination. https://arxiv.org/abs/1402.5244

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