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Mechanisms of blueshifts in organic polariton condensates

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Yagafarov, Timur
dc.contributor.author Sannikov, Denis
dc.contributor.author Zasedatelev, Anton
dc.contributor.author Georgiou, Kyriacos
dc.contributor.author Baranikov, Anton
dc.contributor.author Kyriienko, Oleksandr
dc.contributor.author Shelykh, Ivan
dc.contributor.author Gai, Lizhi
dc.contributor.author Shen, Zhen
dc.contributor.author Lidzey, David
dc.contributor.author Lagoudakis, Pavlos
dc.date.accessioned 2020-11-06T15:51:02Z
dc.date.available 2020-11-06T15:51:02Z
dc.date.issued 2020-01-22
dc.identifier.citation Yagafarov, T., Sannikov, D., Zasedatelev, A. et al. Mechanisms of blueshifts in organic polariton condensates. Communications Physics 3, 18 (2020). https://doi.org/10.1038/s42005-019-0278-6
dc.identifier.issn 2399-3650
dc.identifier.uri https://hdl.handle.net/20.500.11815/2178
dc.description Publisher's version (útgefin grein)
dc.description.abstract Bose-Einstein condensates of exciton-polaritons in inorganic semiconductor microcavities are known to possess strong interparticle interactions attributed to their excitonic component. The interactions play a crucial role in the nonlinear dynamics of such systems and can be witnessed as the energy blueshifts of polariton states. However, the localised nature of Frenkel excitons in strongly coupled organic microcavities precludes interparticle Coulomb exchange-interactions that change mechanisms of the nonlinearity and blueshifts accordingly. In this report, we unravel the origins of blueshifts in organic polariton condensates. We examine the possible contributions: intracavity optical Kerr-effect, gain-induced frequency-pulling, polariton interactions and effects related to saturation of optical transitions for weakly- and strongly-coupled molecules. We conclude that blueshifts in organic polariton condensates arise from the interplay of the saturation effects and intermolecular energy migration. Our model predicts the commonly observed step-like increase of both the emission energy and degree of linear polarization at the polariton condensation threshold.
dc.description.sponsorship We thank Professor Nikolay Gippius for helpful discussions. A.Z. and A.B. acknowledge financial support from the Russian Scientific Foundation (RSF) grant No. 18-72-00227. O.K. and I.S. acknowledge support from the Government of the Russian Federation (projects 14.Y26.31.0015 and 3.2614.2017/4.6) and ITMO Fellowship Program. We also acknowledge partial funding from the UK EPSRC via Programme Grant “Hybrid Polaritonics” EP/M025330/1.
dc.format.extent 18
dc.language.iso en
dc.publisher Springer Science and Business Media LLC
dc.relation.ispartofseries Communications Physics;3(1)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Nonlinear optics
dc.subject Polaritons
dc.subject Ljósfræði
dc.subject Hálfleiðarar
dc.title Mechanisms of blueshifts in organic polariton condensates
dc.type info:eu-repo/semantics/article
dcterms.license Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
dc.description.version Peer Reviewed
dc.identifier.journal Communications Physics
dc.identifier.doi 10.1038/s42005-019-0278-6
dc.relation.url https://www.nature.com/articles/s42005-019-0278-6
dc.contributor.department Raunvísindastofnun (HÍ)
dc.contributor.department Science Institute (UI)
dc.contributor.school Verkfræði- og náttúruvísindasvið (HÍ)
dc.contributor.school School of Engineering and Natural Sciences (UI)

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