Ultrafast polariton relaxation dynamics in an organic semiconductor 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:10.1103/PhysRevB.83.245309

Ultrafast polariton relaxation dynamics in an organic semiconductor microcavity

T. Virgili^*, D. Coles, A. M. Adawi, C. Clark, P. Michetti, S. K. Rajendran, D. Brida, D. Polli, G. Cerullo, D. G. Lidzey

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

We study an organic semiconductor microcavity operating in the strong-coupling regime using fs pump-probe spectroscopy. By probing the induced absorption associated with the one-exciton to two-exciton transition, we are able to characterize the time-dependent population densities of states in the upper- and lower-polariton branches following impulsive excitation. We model the time-dependent polariton dynamics and provide direct evidence of a scattering process that returns upper-branch cavity polaritons to states in the exciton reservoir having a rate of (150 fs)^-1. A slower process similarly populates lower-branch polaritons by return scattering from the exciton reservoir.

Original language	English
Article number	245309
Number of pages	6
Journal	Physical Review. B, Condensed matter and materials physics
Volume	83
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.83.245309
Publication status	Published - 20 Jun 2011

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@article{5d985adf4c084ff481907b394694992b,

title = "Ultrafast polariton relaxation dynamics in an organic semiconductor microcavity",

abstract = "We study an organic semiconductor microcavity operating in the strong-coupling regime using fs pump-probe spectroscopy. By probing the induced absorption associated with the one-exciton to two-exciton transition, we are able to characterize the time-dependent population densities of states in the upper- and lower-polariton branches following impulsive excitation. We model the time-dependent polariton dynamics and provide direct evidence of a scattering process that returns upper-branch cavity polaritons to states in the exciton reservoir having a rate of (150 fs)-1. A slower process similarly populates lower-branch polaritons by return scattering from the exciton reservoir.",

author = "T. Virgili and D. Coles and Adawi, {A. M.} and C. Clark and P. Michetti and Rajendran, {S. K.} and D. Brida and D. Polli and G. Cerullo and Lidzey, {D. G.}",

note = "Funding: The authors thank the UK EPSRC for funding this work via Grant EP/G062404/1 “Engineering polariton non- linearity in organic and hybrid-semiconductor microcavities,” and the European Union via FP7 ITN project Icarus (237900). P.M. thanks the DFG for financial support via Emmy Noether program (Grant No. RE 2978/1- 1).",

year = "2011",

month = jun,

day = "20",

doi = "10.1103/PhysRevB.83.245309",

language = "English",

volume = "83",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

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TY - JOUR

T1 - Ultrafast polariton relaxation dynamics in an organic semiconductor microcavity

AU - Virgili, T.

AU - Coles, D.

AU - Adawi, A. M.

AU - Clark, C.

AU - Michetti, P.

AU - Rajendran, S. K.

AU - Brida, D.

AU - Polli, D.

AU - Cerullo, G.

AU - Lidzey, D. G.

N1 - Funding: The authors thank the UK EPSRC for funding this work via Grant EP/G062404/1 “Engineering polariton non- linearity in organic and hybrid-semiconductor microcavities,” and the European Union via FP7 ITN project Icarus (237900). P.M. thanks the DFG for financial support via Emmy Noether program (Grant No. RE 2978/1- 1).

PY - 2011/6/20

Y1 - 2011/6/20

N2 - We study an organic semiconductor microcavity operating in the strong-coupling regime using fs pump-probe spectroscopy. By probing the induced absorption associated with the one-exciton to two-exciton transition, we are able to characterize the time-dependent population densities of states in the upper- and lower-polariton branches following impulsive excitation. We model the time-dependent polariton dynamics and provide direct evidence of a scattering process that returns upper-branch cavity polaritons to states in the exciton reservoir having a rate of (150 fs)-1. A slower process similarly populates lower-branch polaritons by return scattering from the exciton reservoir.

AB - We study an organic semiconductor microcavity operating in the strong-coupling regime using fs pump-probe spectroscopy. By probing the induced absorption associated with the one-exciton to two-exciton transition, we are able to characterize the time-dependent population densities of states in the upper- and lower-polariton branches following impulsive excitation. We model the time-dependent polariton dynamics and provide direct evidence of a scattering process that returns upper-branch cavity polaritons to states in the exciton reservoir having a rate of (150 fs)-1. A slower process similarly populates lower-branch polaritons by return scattering from the exciton reservoir.

U2 - 10.1103/PhysRevB.83.245309

DO - 10.1103/PhysRevB.83.245309

M3 - Article

AN - SCOPUS:79961215104

SN - 1098-0121

VL - 83

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 24

M1 - 245309

ER -

Ultrafast polariton relaxation dynamics in an organic semiconductor microcavity

Abstract

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