ArticleProceedings of the National Academy of Sciences of the United States of America2016
Nonlinear two-dimensional terahertz photon echo and rotational spectroscopy in the gas phase.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Terahertz stimulated parametric downconversion of a magnon mode in an antiferromagnet.Science advances · 2025Article
- Wideband dispersion-free THz waveguide platform.Scientific reports · 2023Article
- Molecular Orientation-Induced Second-Harmonic Generation: Deciphering Different Contributions Apart.The journal of physical chemistry. A · 2022Article
- Nonlinear rotational spectroscopy reveals many-body interactions in water molecules.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Hydrodynamic nonlinear response of interacting integrable systems.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Decoding ultrafast polarization responses in lead halide perovskites by the two-dimensional optical Kerr effect.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Rotational coherence of encapsulated ortho and para water in fullerene-CScientific reports · 2020Article
- Impact of nuclear quantum effects on the structural inhomogeneity of liquid water.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Perspective: THz-driven nuclear dynamics from solids to molecules.Structural dynamics (Melville, N.Y.) · 2017Article
- Gas-phase broadband spectroscopy using active sources: progress, status, and applications.Journal of the Optical Society of America. B, Optical physics · 2017Article
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Authors and funding
6 authors.
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Abstract
Ultrafast 2D spectroscopy uses correlated multiple light-matter interactions for retrieving dynamic features that may otherwise be hidden under the linear spectrum; its extension to the terahertz regime of the electromagnetic spectrum, where a rich variety of material degrees of freedom reside, remains an experimental challenge. We report a demonstration of ultrafast 2D terahertz spectroscopy of gas-phase molecular rotors at room temperature. Using time-delayed terahertz pulse pairs, we observe photon echoes and other nonlinear signals resulting from molecular dipole orientation induced by multiple terahertz field-dipole interactions. The nonlinear time domain orientation signals are mapped into the frequency domain in 2D rotational spectra that reveal J-state-resolved nonlinear rotational dynamics. The approach enables direct observation of correlated rotational transitions and may reveal rotational coupling and relaxation pathways in the ground electronic and vibrational state.
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