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Polariton condensation in photonic crystals with high molecular orientation

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Date
2018
Author(s)
Karpov, DV
Savenko, IG
Unique identifier
10.1088/1367-2630/aaa750
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Citation
Karpov, DV. Savenko, IG. (2018). Polariton condensation in photonic crystals with high molecular orientation.  NEW JOURNAL OF PHYSICS [ONLINE], 20, 013037. 10.1088/1367-2630/aaa750.
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Abstract

We study Frenkel exciton-polariton Bose–Einstein condensation in a two-dimensional defect-free triangular photonic crystal with an organic semiconductor active medium containing bound excitons with dipole moments oriented perpendicular to the layers. We find photonic Bloch modes of the structure and consider their strong coupling regime with the excitonic component. Using the Gross–Pitaevskii equation for exciton polaritons and the Boltzmann equation for the external exciton reservoir, we demonstrate the formation of condensate at the points in reciprocal space where photon group velocity equals zero. Further, we demonstrate condensation at non-zero momentum states for transverse magnetic-polarized photons in the case of a system with incoherent pumping, and show that the condensation threshold varies for different points in the reciprocal space, controlled by detuning.

URI
https://erepo.uef.fi/handle/123456789/6223
Link to the original item
http://dx.doi.org/10.1088/1367-2630/aaa750
Publisher
IOP Publishing
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  • Luonnontieteiden ja metsätieteiden tiedekunta [1109]
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