Spatial Distribution of the Nonlinear Photoluminescence in Au Nanowires
| Autor: | Olivier Demichel, G. V. Pavan Kumar, Deepak Sharma, Jean-Claude Weeber, Benoit Cluzel, Alexandre Bouhelier, Gérard Colas des Francs, Adrian Agreda, Romain Hernandez, Sviatlana Viarbitskaya |
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| Přispěvatelé: | Laboratoire Interdisciplinaire Carnot de Bourgogne (LICB), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS), Indian Institute of Science Education and Research Pune (IISER Pune) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Photoluminescence Spectral signature Surface plasmon Nanowire Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Surface plasmon polariton Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Excited state [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] 0103 physical sciences Femtosecond Emission spectrum Electrical and Electronic Engineering [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 0210 nano-technology ComputingMilieux_MISCELLANEOUS Biotechnology |
| Zdroj: | ACS photonics ACS photonics, American Chemical Society, 2019, 6 (5), pp.1240-1247. ⟨10.1021/acsphotonics.9b00181⟩ |
| ISSN: | 2330-4022 |
| DOI: | 10.1021/acsphotonics.9b00181⟩ |
| Popis: | When gold nanowires are excited with a tightly focused femtosecond laser a distributed nonlinear photoluminescence (N-PL) develops throughout the entire structure. A complete spaced-resolved analysis of the spectral signature of the nanowire nonlinear response is carried out to understand the origin of the distributed nonlinear response. We discuss various mechanisms to explain the experimental data and unambiguously demonstrate that the spatial and spectral extension of the N-PL in the nanowire are mainly dictated by the propagation of a surface plasmon excited at the pump wavelength. We also present experimental signature of near-field excitation of a broadband continuum of surface plasmons excited locally throughout the N-PL emission spectrum. |
| Databáze: | OpenAIRE |
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