Nonlinear Transmission of Strong THz‐Electric Fields Through Thin Gold Films
Abstract This study reports on a nonlinear response in thin gold films in the terahertz (THz) frequency region. In an experimental study, the THz‐electric peak field strength is increased and the transmission through the gold film is found to increase nonlinearly with the field strength when it exceeds a few hundred kV cm −1 . Numerical calculations of the electron dynamics based on the momentum‐resolved Boltzmann equation show that the fast ((sub‐) picosecond) electron depolarization activates a THz field‐induced Pauli blocking nonlinearity of the electron–phonon interaction, resulting in an increased transmission.
Authors
- Holger Lange (ORCID: https://orcid.org/0000-0002-4236-2806)
- Andrius Baltuška (ORCID: https://orcid.org/0000-0002-5267-0626)
- Yannic U. Staechelin (ORCID: https://orcid.org/0000-0001-8588-9117)
- Rokas Jutas (ORCID: https://orcid.org/0000-0002-4568-7614)
- A. Pugžlys (ORCID: https://orcid.org/0000-0002-4523-2708)
- Andreas Knorr (ORCID: https://orcid.org/0009-0001-1712-4590)
- Jonas Grumm (ORCID: https://orcid.org/0009-0007-6272-9066)
Institutions
- TU Wien (AT)
- Universität Hamburg (DE)
- University of Potsdam (DE)
- Center for Physical Sciences and Technology (LT)
- Hamburg Institut (Germany) (DE)
- Technische Universität Berlin (DE)
Publication Details
- Journal
- Advanced Optical Materials
- Published
- 2025-10-26
- DOI
- https://doi.org/10.1002/adom.202501831
- Citations
- 1
- Primary Topic
- Plasmonic and Surface Plasmon Research
- Type
- article
- Field-Weighted Citation Impact
- 0.67
Funders
- Deutsche Forschungsgemeinschaft
- Austrian Science Fund
- Universität Hamburg
- Technische Universität Berlin