Few-cycle localized plasmon oscillations
| Autor: | Péter Dombi, Balázs Bánhelyi, Mária Csete, András Szenes, Dávid Vass |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Field (physics) Physics::Optics lcsh:Medicine 02 engineering and technology 7. Clean energy 01 natural sciences Article law.invention 010309 optics Ultrafast photonics law 0103 physical sciences Physics::Atomic and Molecular Clusters Figure of merit lcsh:Science Plasmon Nanophotonics and plasmonics Multidisciplinary business.industry lcsh:R Pulse duration 021001 nanoscience & nanotechnology Laser Pulse (physics) Optoelectronics Nanoparticles Nanorod lcsh:Q 0210 nano-technology business Ultrashort pulse |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | The generation of few-cycle laser pulses proved to be a key enabling technology in strong-field physics and ultrafast science. The question naturally arises whether one can induce few-cycle localized plasmon oscillations in optical near-fields. Here, we perform a comparative study of different plasmonic nanoresonators illuminated by few-cycle pulses. We analyze the number of cycles (NOC) of the plasmonic field, the near-field enhancement (NFE) as well as the figure of merit NFE/NOC. The pulse length dependence of these quantities is also investigated. Throughout the inspected pulse-length interval silica-gold and silica-silver core–shell monomers have the potential to preserve the NOC of the incoming pulse, silver bow-ties result in the highest NFE, whereas gold core–shell dimers have the highest NFE/NOC. Based on the analysis, silver bow-ties, gold core–shell and silver nanorod dimers proved to be the most suitable for few-cycle near-field amplification. |
| Databáze: | OpenAIRE |
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