Ultra-fast polariton dynamics in an organic microcavity T. Virgili, D. Coles, A.M. Adawi, C. Clark, P. Michetti, S.K. Rajendran, D. Brida, D. Polli, G. Cerullo and D.G. Lidzey EPJ Web of Conferences, 41 (2013) 04015 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134104015