Far-Field Petahertz Sampling of Plasmonic Fields.

Autor: Wong KF; The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.; Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany., Li W; Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85478 Garching, Germany.; Physics Department, Ludwig-Maximilians-Universität Munich, Am Coulombwall 1, 85748 Garching, Germany., Wang Z; Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85478 Garching, Germany.; Physics Department, Ludwig-Maximilians-Universität Munich, Am Coulombwall 1, 85748 Garching, Germany., Wanie V; Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany., Månsson E; Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany., Hoeing D; The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany., Blöchl J; Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85478 Garching, Germany.; Physics Department, Ludwig-Maximilians-Universität Munich, Am Coulombwall 1, 85748 Garching, Germany., Nubbemeyer T; Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85478 Garching, Germany.; Physics Department, Ludwig-Maximilians-Universität Munich, Am Coulombwall 1, 85748 Garching, Germany., Azzeer A; Attosecond Science Laboratory, Physics and Astronomy Department, King-Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia., Trabattoni A; Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.; Institute of Quantum Optics, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany., Lange H; The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.; Intitute of Physics and Astronomy, Universität Potsdam, Karl-Liebknecht-Str. 24, 14476 Potsdam, Germany., Calegari F; The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany.; Center for Free-Electron Laser Science CFEL, Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany., Kling MF; Max Planck Institute of Quantum Optics, Hans-Kopfermann-Str. 1, 85478 Garching, Germany.; Physics Department, Ludwig-Maximilians-Universität Munich, Am Coulombwall 1, 85748 Garching, Germany.; Stanford PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd, Menlo Park, California 94025, United States.; Applied Physics Department, Stanford University, 348 Via Pueblo, Stanford, California 94305, United States.
Jazyk: angličtina
Zdroj: Nano letters [Nano Lett] 2024 May 08; Vol. 24 (18), pp. 5506-5512. Date of Electronic Publication: 2024 Mar 26.
DOI: 10.1021/acs.nanolett.4c00658
Abstrakt: 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.
Databáze: MEDLINE