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; D.G. Lidzey

doi:10.1051/epjconf/20134104015

All issues

Volume 41 (2013)

EPJ Web of Conferences, 41 (2013) 04015

Abstract

Open Access

Issue		EPJ Web of Conferences Volume 41, 2013 XVIIIth International Conference on Ultrafast Phenomena


Article Number		04015
Number of page(s)		3
Section		Physics – Condensed Phase, Surfaces and Low Dimensional Systems
DOI		https://doi.org/10.1051/epjconf/20134104015
Published online		13 March 2013

EPJ Web of Conferences 41, 04015 (2013)
https://doi.org/10.1051/epjconf/20134104015

Ultra-fast polariton dynamics in an organic microcavity

T. Virgili¹, D. Coles², A.M. Adawi²^,*, C. Clark³, P. Michetti⁴, S.K. Rajendran¹, D. Brida¹, D. Polli¹, G. Cerullo¹ and D.G. Lidzey²

¹ IFN, CNR Dipartimento di Fisica, Politecnico di Milano, P.zza Leonardo Da Vinci 32, 20132 Milano, Italy
² Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
³ Helia Photonics Ltd. Rosebank Park, Livingston, West Lothian EH54 7EJ, United Kingdom
⁴ Institute of Theoretical Physics and Astrophysics, University of Würzburg, D-97074 Würzburg, Germany

Abstract

We study an organic semiconductor microcavity operating in the strong-coupling regime using femtosecond pump-probe spectroscopy. By probing the photo-induced absorption bands, we characterize the time-dependent population densities of states in the two polariton branches. We found evidence of a scattering process from the upper-branch cavity polaritons to the exciton reservoir having a rate of (150 fs)-1. A slower process similarly populates lower-branch polaritons with a rate of around (3ps)-1

^*

Present address: Department of Physics University of Hull, Cottingham Road Hull, HU6 7RX, United Kingdom

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