Please use this identifier to cite or link to this item:
http://doi.org/10.25358/openscience-9180
Authors: | Rouzegar, Reza Chekhov, Alexander Behovits, Yannic Serrano, B. R. Syskaki, Maria-Andromachi Lambert, C. H. Engel, Dieter Martens, Ulricke Münzenberg, Markus Wolf, M. Jakob, Gerhard Kläui, Mathias Seifert, Tom S. Kampfrath, Tobias |
Title: | Broadband spintronic terahertz source with peak electric fields exceeding 1.5 MV/cm |
Online publication date: | 15-Jun-2023 |
Year of first publication: | 2023 |
Language: | english |
Abstract: | In this work, we improve the performance of an optically pumped spintronic terahertz emitter (STE) by a factor of up to 6 in field amplitude through an optimized photonic and thermal environment. Using high-energy pump pulses (energy 5 mJ, fluence >1 mJ / cm 2 , wavelength 800 nm, duration 80 fs), we routinely generate terahertz pulses with focal peak electric fields above 1.5 MV/cm, fluences of the order of 1 mJ / cm 2 , and a spectrum covering the range 0.1–11 THz. Remarkably, the field and fluence values are comparable to those obtained from a state-of-the-art terahertz table-top high-field source based on tilted-pulse-front optical rectification in Li Nb O 3 . The optimized STE inherits all attractive features of the standard STE design, for example, ease of use and the straightforward rotation of the terahertz polarization plane, without the typical 75% power loss found in Li Nb O 3 setups. It, thus, opens up a promising pathway to nonlinear terahertz spectroscopy. Using low-energy laser pulses (2 nJ, 0.2 mJ / cm 2 , 800 nm, 10 fs), the emitted terahertz pulse has a focal peak electric field of 100 V/cm, which corresponds to a 2-fold improvement, and covers the spectrum 0.3–30 THz. |
DDC: | 530 Physik 530 Physics |
Institution: | Johannes Gutenberg-Universität Mainz |
Department: | FB 08 Physik, Mathematik u. Informatik |
Place: | Mainz |
ROR: | https://ror.org/023b0x485 |
DOI: | http://doi.org/10.25358/openscience-9180 |
Version: | Published version |
Publication type: | Zeitschriftenaufsatz |
License: | CC BY |
Information on rights of use: | https://creativecommons.org/licenses/by/4.0/ |
Journal: | Physical review applied 19 3 |
Pages or article number: | 034018 |
Publisher: | American Physical Society |
Publisher place: | College Park, Md. u.a. |
Issue date: | 2023 |
ISSN: | 2331-7019 |
Publisher DOI: | 10.1103/PhysRevApplied.19.034018 |
Appears in collections: | JGU-Publikationen |
Files in This Item:
File | Description | Size | Format | ||
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![]() | broadband_spintronic_terahert-20230525100035229.pdf | 3.31 MB | Adobe PDF | View/Open |