Rohrbach, David; Kang, Bong Joo; Zyaee, Elnaz; Feurer, Thomas (2023). Wideband dispersion-free THz waveguide platform. Scientific reports, 13(1), p. 15228. Springer Nature 10.1038/s41598-023-41843-6
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We present a versatile THz waveguide platform for frequencies between 0.1 THz and 1.5 THz, designed to exhibit vacuum-like dispersion and electric as well as magnetic field enhancement. While linear THz spectroscopy benefits from the extended interaction length in combination with moderate losses, nonlinear THz spectroscopy profits from the field enhancement and zero dispersion, with the associated reshaping-free propagation of broadband single- to few-cycle THz pulses. Moreover, the vacuum-like dispersion allows for velocity matching in mixed THz and visible to infrared pump-probe experiments. The platform is based on the motif of a metallic double ridged waveguide. We experimentally characterize essential waveguide properties, for instance, propagation and bending losses, but also demonstrate a junction and an interferometer, essentially because those elements are prerequisites for THz waveform synthesis, and hence, for coherently controlled linear and nonlinear THz interactions.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Applied Physics > Lasers 08 Faculty of Science > Institute of Applied Physics |
UniBE Contributor: |
Rohrbach, David, Kang, Bong-Joo, Zyaee, Elnaz, Feurer, Thomas |
Subjects: |
600 Technology > 620 Engineering |
ISSN: |
2045-2322 |
Publisher: |
Springer Nature |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
15 Sep 2023 09:38 |
Last Modified: |
15 Sep 2023 09:47 |
Publisher DOI: |
10.1038/s41598-023-41843-6 |
PubMed ID: |
37709825 |
BORIS DOI: |
10.48350/186335 |
URI: |
https://boris.unibe.ch/id/eprint/186335 |
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