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Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Kravtsov, Vasily
dc.contributor.author Khestanova, Ekaterina
dc.contributor.author Benimetskiy, Fedor A.
dc.contributor.author Ivanova, Tatiana
dc.contributor.author Samusev, Anton K.
dc.contributor.author Sinev, Ivan S.
dc.contributor.author Pidgayko, Dmitry
dc.contributor.author Mozharov, Alexey M.
dc.contributor.author Mukhin, Ivan S.
dc.contributor.author Lozhkin, Maksim S.
dc.contributor.author Kapitonov, Yuri V.
dc.contributor.author Brichkin, Andrey S.
dc.contributor.author Kulakovskii, Vladimir D.
dc.contributor.author Shelykh, Ivan
dc.contributor.author Tartakovskii, Alexander I.
dc.contributor.author Walker, Paul M.
dc.contributor.author Skolnick, Maurice S.
dc.contributor.author Krizhanovskii, Dmitry N.
dc.contributor.author Iorsh, Ivan V.
dc.date.accessioned 2020-10-30T14:44:02Z
dc.date.available 2020-10-30T14:44:02Z
dc.date.issued 2020-04-09
dc.identifier.citation Kravtsov, V., Khestanova, E., Benimetskiy, F.A. et al. Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum. Light: Science & Applications 9, 56 (2020). https://doi.org/10.1038/s41377-020-0286-z
dc.identifier.issn 2047-7538
dc.identifier.uri https://hdl.handle.net/20.500.11815/2152
dc.description Publisher's version (útgefin grein)
dc.description.abstract Optical bound states in the continuum (BICs) provide a way to engineer very narrow resonances in photonic crystals. The extended interaction time in these systems is particularly promising for the enhancement of nonlinear optical processes and the development of the next generation of active optical devices. However, the achievable interaction strength is limited by the purely photonic character of optical BICs. Here, we mix the optical BIC in a photonic crystal slab with excitons in the atomically thin semiconductor MoSe2 to form nonlinear exciton-polaritons with a Rabi splitting of 27 meV, exhibiting large interaction-induced spectral blueshifts. The asymptotic BIC-like suppression of polariton radiation into the far field toward the BIC wavevector, in combination with effective reduction of the excitonic disorder through motional narrowing, results in small polariton linewidths below 3 meV. Together with a strongly wavevector-dependent Q-factor, this provides for the enhancement and control of polariton–polariton interactions and the resulting nonlinear optical effects, paving the way toward tuneable BIC-based polaritonic devices for sensing, lasing, and nonlinear optics.
dc.description.sponsorship The authors acknowledge funding from the Ministry of Education and Science of the Russian Federation through Megagrant No. 14.Y26.31.0015. A.I.T. and D.N.K. acknowledge the UK EPSRC grant EP/P026850/1. I.A.S. acknowledges the project “Hybrid polaritonics” of Icelandic Science Foundation. Numerical calculations of the angle-resolved reflectivity maps were funded by RFBR according to the research project № 18-32-00527. Sample fabrication was funded by RFBR, project No 19-32-90269. Time-resolved measurements were partly funded by the Russian Science Foundation (Grant No. 19-72-30003). V.K. acknowledges support from the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. This work was in part carried out using equipment of the SPbU Resource Centers “Nanophotonics” and “Nanotechnology”. We thank M. Zhukov, A. Bukatin, and A. Chezhegov for their assistance with the sample characterization and A. Bogdanov for the helpful discussion.
dc.format.extent 56
dc.language.iso en
dc.publisher Springer Science and Business Media LLC
dc.relation.ispartofseries Light: Science & Applications;9(1)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Nonlinear optics
dc.subject Excitons
dc.subject Polariton linewidth
dc.subject Ljósfræði
dc.subject Hálfleiðarar
dc.title Nonlinear polaritons in a monolayer semiconductor coupled to optical bound states in the continuum
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 Light: Science & Applications
dc.identifier.doi 10.1038/s41377-020-0286-z
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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