Ultrafast nonlinear plasmonic response of a single metal nano-object
(Conference Presentation)

Fabrice Vallee; Natalia Del Fatti; Aurélien Crut; Paolo Maioli

doi:10.1117/12.2236923

9 November 2016 Ultrafast nonlinear plasmonic response of a single metal nano-object (Conference Presentation)

Fabrice Vallee, Natalia Del Fatti, Aurélien Crut, Paolo Maioli

Proceedings Volume 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV; 99210Z (2016) https://doi.org/10.1117/12.2236923
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

The surface plasmon resonances (SPR) of metallic layers and localized SPR of metallic nano-objects have been extensively investigated during the last decade, opening the way to development of optical plasmon-based devices. As SPRs are associated to electromagnetic local field enhancement, they also lead to enhancement of the system optical nonlinearity, which can be exploited to investigate fundamental processes at nanoscale (e.g., electron and lattice kinetics), and for designing active plasmonic devices. Understanding and modelling the optical nonlinearities of plasmonic systems are thus of both fundamental and technological interests. With the advance of single nanoparticle spectroscopy methods, the nonlinear optical response of a single nano-object can now be addressed, which, associated to determination of its morphology by electron microscopy, opens the way to detailed modeling of the optical nonlinearity of metallic confined system. In this context we discuss experimental and theoretical investigations of the ultrafast response of individual model metallic nano-objects, either formed by a single particle or by two interacting particles at a nanometric distance (Fano resonance regime). The results show that their specific third–order nonlinear response can be fully associated to enhancement of the bulk metal nonlinear response by plasmonic effects. This paves the way toward quantitative modelling of ultrafast active plasmonic, and investigation of energy and charge exchanges in multi-material nano-objects by ultrafast nonlinear spectroscopy.

Conference Presentation

Citation Download Citation

Fabrice Vallee, Natalia Del Fatti, Aurélien Crut, and Paolo Maioli "Ultrafast nonlinear plasmonic response of a single metal nano-object (Conference Presentation)", Proc. SPIE 9921, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XIV, 99210Z (9 November 2016); https://doi.org/10.1117/12.2236923

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KEYWORDS

Plasmonics

Metals

Nonlinear optics

Ultrafast phenomena

Active plasmonics

Modeling

Nonlinear response

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