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Ultrastrongly Coupled Exciton–Polaritons in Metal‐Clad Organic Semiconductor Microcavities
Author(s) -
KénaCohen Stéphane,
Maier Stefan A.,
Bradley Donal D. C.
Publication year - 2013
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201300256
Subject(s) - polariton , exciton , materials science , photoluminescence , semiconductor , exciton polaritons , hamiltonian (control theory) , condensed matter physics , photon , metal , organic semiconductor , optoelectronics , physics , optics , mathematical optimization , mathematics , metallurgy
Ultrastrong exciton–photon coupling of Frenkel molecular excitons is demonstrated at room temperature in a metal‐clad microcavity containing a thin film of 2,7‐bis[9,9‐di(4‐methylphenyl)‐fluoren‐2‐yl]‐9,9‐di(4‐methylphenyl)fluorene. A giant Rabi splitting of Ω ∼ 1 eV is measured using angle‐resolved reflectivity and bright photoluminescence is observed from the lower polariton branch. To obtain the virtual photon and exciton content of the polariton ground state, the results are interpreted in terms of the full Hopfield Hamiltonian, including anti‐resonant terms. Also included is an analytical treatment of the often ignored and sometimes misinterpreted TM‐polarized metal–insulator–metal plasmon–polariton.