Journal Article

PUBDB-2024-01388

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Far-Field Petahertz Sampling of Plasmonic Fields

Wong, K.-F.Extern*DESY* ; Li, W.Extern* ; Wang, Z. ; Wanie, V.CFEL*DESY* ; Maansson, E.DESY* ; Hoeing, D.Extern* ; Blochl, J. ; Nubbemeyer, T. ; Azzeer, A. M. ; Trabattoni, A.DESY* ; Lange, H. (Corresponding author)Extern*XFEL.EU* ; Calegari, F. (Corresponding author)DESY* ; Kling, M. (Corresponding author)Extern*MPG*

2024
ACS Publ. Washington, DC

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Please use a persistent id in citations: doi:10.1021/acs.nanolett.4c00658  doi:10.3204/PUBDB-2024-01388

Abstract: The response of metal nanostructures to optical excitation leads to localized surface plasmon (LSP) generation with nanoscale field confinement driving applications in, for example,quantum optics and nanophotonics. Field sampling in the terahertz domain has had a tremendous impact on the ability to trace such collective excitations. Here, we extend such capabilities and introduce direct sampling of LSPs in a more relevant petahertz domain. The method allows to measure the LSP field in arbitrary nanostructures with subcycle precision. We demonstrate the technique for colloidal nanoparticles and compare the results to finite-difference time-domain calculations, which show that the build-up and dephasing of the plasmonic excitation can be resolved. Furthermore, we observe a reshaping of the spectral phase of the few-cycle pulse, and we demonstrate ad-hoc pulse shaping by tailoring the plasmonic sample. The methodology can be extended to single nanosystems and applied in exploring subcycle, attosecond phenomena.

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Contributing Institute(s):

1. Attosecond Science and Technology (FS-ATTO)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
3. DFG project 194651731 - EXC 1074: Hamburger Zentrum für ultraschnelle Beobachtung (CUI): Struktur, Dynamik und Kontrolle von Materie auf atomarer Skala (194651731) (194651731)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 10 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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