Clocking plasmon nanofocusing by THz near-field streaking

2017/09/25 by Lara Wimmer, Benjamin Schröder, Murat Sivis +2 · 3 citations
Engineering · Physics and Astronomy · #Conical surface #Diffraction #Excitation #Materials science #Optics #Optoelectronics #Photonic and Optical Devices #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Streaking #Surface plasmon #Surface plasmon polariton #Terahertz radiation #Terahertz technology and applications #cond-mat.other #physics.optics

paper · pdf · doi:10.1063/1.4991860

published in Applied Physics Letters 111(13) (American Institute of Physics) · 4 pages, 3 figures

openalex publication_date 2017/09/25 · arxiv created 2020/08/25 · arxiv updated 2020/08/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We apply terahertz (THz) near-field streaking in a nanofocusing geometry to investigate plasmon polariton propagation on the shaft of a conical nanotip. By evaluating the delay between a streaking spectrogram for plasmon-induced photoemission with a measurement for direct apex excitation, we obtain an average plasmon group velocity, which is in agreement with numerical simulations. Combining plasmon-induced photoemission with THz near-field streaking facilitates extensive control over localized photoelectron sources for time-resolved imaging and diffraction.

Citations

• Energy Distribution Curves of Ultrafast Laser-Induced Field Emission and Their Implications for Electron Dynamics
• Observation of the Spin-Based Plasmonic Effect in Nanoscale Structures
• Optical Constants of the Noble Metals
• Field Emission Tip as a Nanometer Source of Free Electron Femtosecond Pulses
• Laser-induced ultrafast electron emission from a field emission tip