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Loss circumvention and plasmonic lasing in arrays of magnetic nanodots

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor van Dijken, Sebastiaan, Aalto University, Department of Applied Physics, Finland
dc.contributor.author Freire Fernández, Francisco
dc.date.accessioned 2020-02-05T10:01:06Z
dc.date.available 2020-02-05T10:01:06Z
dc.date.issued 2020
dc.identifier.isbn 978-952-60-8959-1 (electronic)
dc.identifier.isbn 978-952-60-8958-4 (printed)
dc.identifier.issn 1799-4942 (electronic)
dc.identifier.issn 1799-4934 (printed)
dc.identifier.issn 1799-4934 (ISSN-L)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/42977
dc.description.abstract The results compiled in this dissertation range from basic research on magnetoplasmonic to applications where magneto-optics and plasmonics are brought together to bring out the best of both fields. Four main topics were explored: the excitation of surface plasmon in arrays of Co/Pt nanodots, demagnetization and magnetic switching in magnetoplasmonic systems triggered by femtosecond pulses, loss circumvention in magnetoplasmonic systems, and lasing in magnetoplasmonic nanocavities.  The systematic study of Co/Pt nanodot arrays provides a comprehensive guide to the excitation of surface lattice resonances in this relevant material system as well as a detailed explanation of the origin of their optical and magneto-optical response. Additionally, the exploitation of surface plasmon excitations in ultrafast demagnetization and laser-induced magnetic switching is discussed for Ni nanodot arrays. Surface lattice resonances in this system enhance the absorption of femtosecond laser pulses, rendering more efficient heating of the Ni nanodots. The problem of optical losses in metallic magnetoplasmonic systems is also examined. The development of a new loss circumvention method based on arrays of magnetic nanodots and the excitation of surface plasmon polaritons at a metal/dielectric interface enabled the excitation of high-quality factorplasmonic resonances comparable to those obtained in pure noble metal systems. These narrow resonances do spectrally tailor and strongly enhance the magneto-optical response of the magnetic nanodots. Lastly, the excitation of narrow plasmonic resonances in arrays of Co/Pt nanodots overlaid with an organic gain medium provides efficient nanoscale lasing. It is important to note that active magnetic field control of the lasing intensity is demonstrated for the first time in this system. The effect is ascribed to magnetic circular dichroism in the Co/Pt nanodots. en
dc.format.extent 116 + app. 42
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Aalto University en
dc.publisher Aalto-yliopisto fi
dc.relation.ispartofseries Aalto University publication series DOCTORAL DISSERTATIONS en
dc.relation.ispartofseries 30/2020
dc.relation.haspart [Publication 1]: Kataja, M., Freire-Fernández, F.,Witteveen, J.P., Hakala, T.K., Törmä, P., van Dijken, S. Plasmon-induced demagnetization and magnetic switching in nickel nanoparticle arrays. Applied Physics Letters, 2018, 112, 072406. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201805222514. DOI: 10.1063/1.5012857
dc.relation.haspart [Publication 2]: Freire-Fernández, F., Kataja, M., van Dijken, S. Surface-plasmonpolariton-driven narrow linewidth magneto-optics in Ni nanodisk arrays. Nanophotonics, 2020, 9(1):113-121. DOI: 10.1515/nanoph-2019-0331
dc.relation.haspart [Publication 3]: Freire-Fernández, F., Mansell, R., van Dijken, S. Magnetoplasmonic properties of perpendicularly magnetized [Co/Pt]N nanodots. Accepted for publication in Physical Review B, 28th January 2020.
dc.relation.haspart [Publication 4]: Pourjamal, S., Hakala, T.K., Něcada, M., Freire-Fernández, F., Kataja, M., Rekola, H., Martikainen, J.P., Törmä, P., and van Dijken, S. Lasing in Ni nanodisk arrays. ACS Nano, 2019, 13, 5686-5692. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201909035086. DOI: 10.1021/acsnano.9b01006
dc.subject.other Physics en
dc.title Loss circumvention and plasmonic lasing in arrays of magnetic nanodots en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword plasmonics en
dc.subject.keyword magnetoplasmonics en
dc.subject.keyword magnetic nanodots en
dc.identifier.urn URN:ISBN:978-952-60-8959-1
dc.type.dcmitype text en
dc.type.ontasot Doctoral dissertation (article-based) en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.contributor.supervisor van Dijken, Sebastiaan, Aalto University, Department of Applied Physics, Finland
dc.opn Gómez Rivas, Jaime, Prof., Eindhoven University of Technology, The Netherlands
dc.contributor.lab Nanomagnetism and Spintronics en
dc.rev Caglayan, Humeyra, Assoc. Prof., Tampere University, Finland
dc.rev Chauleau, Jean-Yves, Dr., CEA Saclay, France
dc.date.defence 2020-02-24
local.aalto.acrisexportstatus checked 2020-03-21_1400
local.aalto.formfolder 2020_02_05_klo_08_49
local.aalto.archive yes

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