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Updated: Apr 11, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Enhanced Raman Scattering from Vibro-Polariton Hybrid States
Atef Shalabney1, Jino George1, Hidefumi Hiura2
1ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France).
Abstract:
Ground-state molecular vibrations can be hybridized through strong coupling with the vacuum field of a cavity optical mode in the infrared region, leading to the formation of two new coherent vibro-polariton states. The spontaneous Raman scattering from such hybridized light-matter states was studied, showing that the collective Rabi splitting occurs at the level of a single selected bond. Moreover, the coherent nature of the vibro-polariton states boosts the Raman scattering cross-section by two to three orders of magnitude, revealing a new enhancement mechanism as a result of vibrational strong coupling. This observation has fundamental consequences for the understanding of light-molecule strong coupling and for molecular science.
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