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Enhanced Raman Scattering from Vibro‐Polariton Hybrid States
Author(s) -
Shalabney Atef,
George Jino,
Hiura Hidefumi,
Hutchison James A.,
Genet Cyriaque,
Hellwig Petra,
Ebbesen Thomas W.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201502979
Subject(s) - polariton , raman scattering , raman spectroscopy , coupling (piping) , x ray raman scattering , molecular physics , molecular vibration , scattering , resonance (particle physics) , infrared , physics , atomic physics , chemistry , condensed matter physics , materials science , optics , metallurgy
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.