A Yellow Polariton Condensate in a Dye Filled Microcavity
Advanced Optical Materials
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Cookson, T., Georgiou, K., Zasedatelev, A., Grant, R., Virgili, T., Cavazzini, M., Galeotti, F., et al. (2017). A Yellow Polariton Condensate in a Dye Filled Microcavity. Advanced Optical Materials, 5 (18)https://doi.org/10.1002/adom.201700203
Polariton condensation in the yellow part of the visible spectrum from a planar organic semiconductor microcavity containing the molecular dye bromine-substituted boron-dipyrromethene is observed. This study provides experimental fingerprint of polariton condensation under nonresonant optical excitation, including the nonlinear dependence of the emission intensity and wavelength blueshift with increasing excitation density, single excitation pulse dispersion imaging, and real space interferometry. The latter two allow to visualize the collapse of the energy distribution and the long-range coherence of the polariton condensate.
The authors thank the EPSRC for funding this research through the Programme Grant No. EP/M025330/1 “Hybrid Polaritonics” and for funding Ph.D. scholarships for T.C., K.G., and R.T.G. through institutional DTP allocations. K.G. fabricated the sample and characterized the linear dynamics of the microcavity. T.C. contributed the nonlinear spectroscopy and A.Z. contributed the ASE measurements.
External DOI: https://doi.org/10.1002/adom.201700203
This record's URL: https://www.repository.cam.ac.uk/handle/1810/265842