Raman scattering in strongly coupled organic semiconductor microcavities -art. no. 121302

We report the observation of resonant Raman scattering in the strong coupli ng regime for a planar microcavity containing cyanine dye J aggregates. The giant Rabi splitting between the polariton branches, resulting from the ve ry large exciton oscillator strengths, allows the observation of doubly res onant Raman scattering where both incident and scattered photons are in res onance with the mixed exciton-cavity-mode states. Under double resonance co nditions the Raman signals are found to be very significantly enhanced, by factors up to 300, relative to noncavity organic films.