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Q: Fachverband Quantenoptik und Photonik

Q 59: Lasers II

Q 59.7: Talk

Friday, March 15, 2024, 12:30–12:45, HS 1015

Far-field petahertz sampling of plasmonic fields — •Kai-Fu Wong1,2, Weiwei Li3,4, Zilong Wang3,4, Vincent Wanie2, Erik Månsson2, Dominik Höing1,5, Johannes Blöchl3,4, Thomas Nubbemeyer3,4, Andrea Trabattoni2,6, Holger Lange1,5, Francesca Calegari1,2, and Matthias F. Kling3,4,71The Hamburg Centre for Ultrafast Imaging, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany — 2Center for Free-Electron Laser Science, DESY, Notkestr. 85, 22607 Hamburg, Germany — 3Max Planck Institute of Quantum Optics, MPQ, Hans-Kopfermann-Straße 1, 85748 Munich, Germany — 4Ludwig-Maximilians-Universität München, LMU, Am Coloumbwall 1, 85748 Munich, Germany — 5Institute of Physical Chemistry, Universität Hamburg, Grindelallee 117, 20146 Hamburg, Germany — 6Institute of Quantum Optics, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany — 7SLAC National Accelerator Laboratory, Stanford University, 2575 Sand Hill Rd, Menlo Park, 94025 California, USA

We demonstrate the realtime observation of linear plasmonic fields by optical field sampling. A comparison between non-resonantly and resonantly excited samples shows that dephasing features of the resonantly excited case sustain into the far-field domain. Our findings also demonstrate the ability to manipulate the spectral properties of ultrashort laser pulses by plasmonic samples, which can act as metasurfaces.

Keywords: Petahertz; Plasmonics; Field Sampling; Metasurface; Ultrafast dynamics

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