Retrieving the susceptibility from time-resolved terahertz experiments
Open accessAbstract
We present an analytical expression for the observed signal in time- and phase-resolved pump-probe studies, with particular emphasis on terahertz time-domain spectroscopy. Maxwell’s equations are solved for the response of damped, harmonic oscillators to a driving probe field in the perturbative regime. Our analytical expressions agree with the one previously reported in the literature [Nemec et al., J. Chem. Phys. 122, 104503 (2005)] in the Drude limit; however, they differ in the case of a vibrational resonance.
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The straightforward interpretation of THz-TDS as a snapshot of the optical conductivity spectrum breaks down when characteristic relaxation times are comparable to the photoexcitation delay, because the Fourier transform involves times that precede photoexcitation.
“However, the straightforward interpretation of THz-TDS as a snapshot of the optical conductivity spectrum breaks down when the characteristic relaxation times are comparable to the photoexcitation delay, because the Fourier transform involves times that precede photoexcitation. 1,9-16”
From Terahertz time-domain spectroscopy of transient metallic and superconducting states (2015) · cites this paper as [14]
The damping term decreases when the carrier density increases, because the model incorrectly assumes that all carriers move with the same velocity.
“Conversely, the damping term decreases when the carrier density increases, because our model incorrectly assumes that all carriers move with the same velocity. 14”
From Terahertz time-domain spectroscopy of transient metallic and superconducting states (2015) · cites this paper as [14]
Similar oscillations in Σ(ω;t_s) were observed previously in measurements and simulations, and Eq. 13 clarifies their origin.
“Similar oscillations were observed previously in both measurements 18 and simulations, 14 and Eq. 13 clarifies their origin.”
From Terahertz time-domain spectroscopy of transient metallic and superconducting states (2015) · cites this paper as [14]
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References 29 · Cited by 8
- Authors
- Schins, J. M., Hendry, E., Bonn, M., & Muller, H. G.
- Affiliations
- Delft University of Technology (NL)
- University of Exeter (GB)
- Institute for Atomic and Molecular Physics (NL)
- Venue
- The Journal of Chemical Physics
- Publisher
- AIP Publishing
- Published
- 2007-09-07
- Volume
- 127
- Issue
- 9
- Pages
- 094308-094308
- ISSN
- 0021-9606 (ISSN-L)
- 1089-7690
- OpenAlex
- W2160112769
- Cited by
- 8
- References
- 29
- Citations by year
- 2024: 1 · 2023: 1 · 2021: 1 · 2020: 1 · 2015: 1
- FWCI
- 0.63
- Type
- journal article
- Language
- en
- Open access
- green
- resolver.tudelft.nl
- Licence
- other-oa
- Locations
- The Journal of Chemical Physics (publishedVersion)
- PubMed (publishedVersion)
- Figshare (submittedVersion)
- Open Research Exeter (University of Exeter) (submittedVersion)
- Research Repository (Delft University of Technology) (submittedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
- 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 › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Spectroscopy and Quantum Chemical Studies
- Keywords
- time-resolved terahertz spectroscopy, pump-probe spectroscopy, phase-resolved spectroscopy, damped harmonic oscillator, Drude model, vibrational resonance, Maxwell's equations
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Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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