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  Ultrabroadband single-cycle terahertz pulses with peak fields of 300 kV cm-1 from a metallic spintronic emitter

Seifert, T., Jaiswal, S., Sajadi, M., Jakob, G., Winnerl, S., Wolf, M., et al. (2017). Ultrabroadband single-cycle terahertz pulses with peak fields of 300 kV cm-1 from a metallic spintronic emitter. Applied Physics Letters, 110(25): 252402. doi:10.1063/1.4986755.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002D-9A48-F Version Permalink: https://hdl.handle.net/21.11116/0000-0000-6221-C
Genre: Journal Article

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 Creators:
Seifert, Tom1, Author           
Jaiswal, S.2, 3, Author
Sajadi, Mohsen1, Author           
Jakob, G.2, Author
Winnerl, S.4, Author
Wolf, Martin1, Author           
Kläui, M.2, Author
Kampfrath, Tobias1, Author           
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Institute of Physics, Johannes Gutenberg University Mainz, 55099 Mainz, Germany, ou_persistent22              
3Singulus Technologies AG, 63796 Kahl am Main, Germany, ou_persistent22              
4Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany, ou_persistent22              

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 Abstract: We explore the capabilities of metallic spintronic thin-film stacks as a source of intense and broadband terahertz electromagnetic fields. For this purpose, we excite a W/CoFeB/Pt trilayer (thickness of 5.6 nm) on a large-area glass substrate (diameter of 7.5 cm) by a femtosecond laser pulse (energy 5.5 mJ, duration 40 fs, and wavelength 800 nm). After focusing, the emitted terahertz pulse is measured to have a duration of 230 fs, a peak field of 300 kV cm−1, and an energy of 5 nJ. In particular, the waveform exhibits a gapless spectrum extending from 1 to 10 THz at 10% of its amplitude maximum, thereby facilitating nonlinear control over matter in this difficult-to-reach frequency range on the sub-picosecond time scale.

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Language(s): eng - English
 Dates: 2017-03-282017-05-112017-06-192017-06-19
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1063/1.4986755
 Degree: -

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Project name : TERAMAG - Ultrafast spin transport and magnetic order controlled by terahertz electromagnetic pulses
Grant ID : 681917
Funding program : Horizon 2020 (H2020)
Funding organization : European Commission (EC)

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Title: Applied Physics Letters
  Abbreviation : Appl. Phys. Lett.
Source Genre: Journal
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Publ. Info: Melville, NY : American Institute of Physics
Pages: 6 Volume / Issue: 110 (25) Sequence Number: 252402 Start / End Page: - Identifier: Other: 0003-6951
CoNE: https://pure.mpg.de/cone/journals/resource/954922836223