Cited by 16Terahertz technology and applicationsLaser-Matter Interactions and ApplicationsSpectroscopy and Laser Applications

The effect of the Gouy phase in optical-pump-THz-probe spectroscopy

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Ahmed, Saima, Savolainen, Janne, Hamm, Peter·2014·Optics Express

Abstract

We show theoretically as well as experimentally that the Gouy-phase shift, which depends on the exact positioning of a sample in relation to the focus of a probe beam in a pump-probe experiment, may have a pronounced effect on the shape of the pump-probe signal. The effect occurs only when single-cycle probe pulses are used, i.e. when the slowly varying envelope approximation breaks down, while it disappears for multi-cycle pulses. The effect is thus most relevant in THz time-resolved spectroscopy, where such single cycle pulses are most commonly used, but it should not be overlooked also in other spectral regimes when correspondingly short pulses are involved.

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Crossref · 10.1364/oe.22.004256

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44 of 44 references verified0 citation errors · 0 not checkable

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Authors
Ahmed, S., Savolainen, J., & Hamm, P.
Affiliations
University of Zurich (CH)
Venue
Optics Express
Published
2014-02-18
Volume
22
Issue
4
Pages
4256
ISSN
1094-4087 (ISSN-L)
OpenAlex
W1973104634
Cited by
16
References
44
Citations by year
2025: 1 · 2023: 1 · 2022: 4 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 1
FWCI
1.06
Type
journal article
Language
en
Open access
Locations
  • Optics Express (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
Swiss National Science Foundation (SNSF) (NCCR MUST)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
Keywords
Gouy phase, optical pump-THz probe spectroscopy

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