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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2011

One-dimensional ZnO exciton polaritons with negligible thermal broadening at room temperature

Résumé

Single ZnO microwires are investigated by angle-resolved photoluminescence spectroscopy. We show that confined optical modes similar to whispering gallery modes can strongly interact with excitons to form one-dimensional exciton polaritons at room temperature, with normal mode splitting exceeding 200 meV. With such a splitting, which is much larger than LO phonon energy, a strong quenching of the polariton-phonon interaction is achieved, even at room temperature and for large excitonic fractions. Thus, a record figure of merit of 50 for the ratio of the Rabi splitting to the polariton full width at half maximum is achieved as a consequence of negligible thermal contribution to dephasing.

Dates et versions

hal-00880142 , version 1 (05-11-2013)

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Aurélien Trichet, Liaoxin Sun, Goran Pavlovic, Nikolay A. Gippius, Guillaume Malpuech, et al.. One-dimensional ZnO exciton polaritons with negligible thermal broadening at room temperature. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2011, 83 (4), pp.041302(R). ⟨10.1103/PhysRevB.83.041302⟩. ⟨hal-00880142⟩
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