1. Mode switching dynamics in organic polariton lasing
- Author
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Päivi Törmä, Jonathan Keeling, Antti Moilanen, Kristin Arnardottir, Quantum Dynamics, Technical University of Denmark, University of St Andrews, Department of Applied Physics, Aalto-yliopisto, Aalto University, EPSRC, The Royal Society of Edinburgh, University of St Andrews. School of Physics and Astronomy, University of St Andrews. Centre for Designer Quantum Materials, and University of St Andrews. Condensed Matter Physics
- Subjects
MCC ,Condensed Matter - Mesoscale and Nanoscale Physics ,TK ,Physics::Optics ,FOS: Physical sciences ,DAS ,TK Electrical engineering. Electronics Nuclear engineering ,QC Physics ,Quantum Gases (cond-mat.quant-gas) ,Mesoscale and Nanoscale Physics (cond-mat.mes-hall) ,Condensed Matter - Quantum Gases ,QC ,Physics - Optics ,Optics (physics.optics) - Abstract
We study the dynamics of multimode polariton lasing in organic microcavities by using a second-order cumulant equation approach. By inspecting the time evolution of the photon mode occupations, we show that if multiple lasing peaks are observed in time-integrated mode occupations, the reason can be either bi-modal lasing or temporal switching between several modes. The former takes place within a narrow range of parameters while the latter occurs more widely. We find that the origin of the temporal switching is different in the weak- and strong-coupling regimes. At weak coupling slope efficiency is the determining factor, while for strong coupling it is changes in the eigenmodes and gain spectrum upon pumping. This difference is revealed by investigating the photoluminescence and momentum-resolved gain spectra. Our results underscore the importance of understanding the time evolution of the populations when characterizing the lasing behaviour of a multimode polariton system, and show how these features differ between weak and strong coupling., Comment: 15 pages, 13 figures
- Published
- 2022
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