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Plasmonic fanoholes: on the gradual transition from suppressed to enhanced optical transmission through nanohole arrays in metal films of increasing film thickness
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering. Platen High Sch, Sweden.
Linköping University, Department of Science and Technology, Physics and Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-3002-3639
2019 (English)In: Optical Materials Express, ISSN 2159-3930, E-ISSN 2159-3930, Vol. 9, no 3, p. 1404-1415Article in journal (Refereed) Published
Abstract [en]

We study the evolution from suppressed to enhanced optical transmission through metal nanohole arrays with increasing film thickness. Due to Fano interferences, the plasmon resonances gradually shift from transmission dips for ultrathin films to peaks for thick films, accompanied by a Fano asymmetry parameter that increases with film thickness. For intermediate thicknesses, both peaks and dips in transmission are far from the plasmon resonances, and hence, also far from the spectral positions of maximum light absorption and nearfield enhancements. Calculations for various hole diameters and periodicities confirm the universality of our conclusions. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2019. Vol. 9, no 3, p. 1404-1415
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URN: urn:nbn:se:liu:diva-155550DOI: 10.1364/OME.9.001404ISI: 000460134500043OAI: oai:DiVA.org:liu-155550DiVA, id: diva2:1299390
Note

Funding Agencies|Wenner-Gren Foundations; AForsk foundation; Swedish Foundation for Strategic Research; Royal Swedish Academy of Sciences; Swedish Research Foundation; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]

Available from: 2019-03-26 Created: 2019-03-26 Last updated: 2019-03-26

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Kang, EvanEkinge, HugoJonsson, Magnus
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CiteExportLink to record
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  • apa
  • harvard1
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  • Other style
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  • de-DE
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