title: Enhanced Raman Scattering from Vibro-Polariton Hybrid States.
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.
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France).
authors.forename: Atef
authors.initials: A
authors.lastname: Shalabney
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France).
authors.forename: Jino
authors.initials: J
authors.lastname: George
authors.affiliation: Smart Energy Research Laboratories, NEC Corporation, Tsukuba (Japan).
authors.forename: Hidefumi
authors.initials: H
authors.lastname: Hiura
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France).
authors.forename: James A
authors.initials: JA
authors.lastname: Hutchison
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France).
authors.forename: Cyriaque
authors.initials: C
authors.lastname: Genet
authors.affiliation: CMC, University of Strasbourg and CNRS, 1 rue Blaise Pascal, 67070 Strasbourg (France).
authors.forename: Petra
authors.initials: P
authors.lastname: Hellwig
authors.affiliation: ISIS & icFRC, University of Strasbourg and CNRS, 8 allée Gaspard Monge, 67000 Strasbourg (France). ebbesen@unistra.fr.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: Ebbesen
keywords: Raman scattering; optical cavity; strong coupling; vibrations; vibro-polariton states