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Ultra-high-Q resonances in plasmonic metasurfaces

  • M. Saad Bin-Alam
  • , Orad Reshef*
  • , Yaryna Mamchur
  • , M. Zahirul Alam
  • , Graham Carlow
  • , Jeremy Upham
  • , Brian T. Sullivan
  • , Jean Michel Ménard
  • , Mikko J. Huttunen
  • , Robert W. Boyd
  • , Ksenia Dolgaleva
  • *Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

483 Citations (Scopus)
30 Downloads (Pure)

Abstract

Plasmonic nanostructures hold promise for the realization of ultra-thin sub-wavelength devices, reducing power operating thresholds and enabling nonlinear optical functionality in metasurfaces. However, this promise is substantially undercut by absorption introduced by resistive losses, causing the metasurface community to turn away from plasmonics in favour of alternative material platforms (e.g., dielectrics) that provide weaker field enhancement, but more tolerable losses. Here, we report a plasmonic metasurface with a quality-factor (Q-factor) of 2340 in the telecommunication C band by exploiting surface lattice resonances (SLRs), exceeding the record by an order of magnitude. Additionally, we show that SLRs retain many of the same benefits as localized plasmonic resonances, such as field enhancement and strong confinement of light along the metal surface. Our results demonstrate that SLRs provide an exciting and unexplored method to tailor incident light fields, and could pave the way to flexible wavelength-scale devices for any optical resonating application.

Original languageEnglish
Article number974
Number of pages8
JournalNature Communications
Volume12
Issue number1
DOIs
Publication statusPublished - 2021
Publication typeA1 Journal article-refereed

Funding

Fabrication in this work was performed in part at the Centre for Research in Photonics at the University of Ottawa (CRPuO). The authors acknowledge support from the Canada Excellence Research Chairs (CERC) Program, the Canada Research Chairs (CRC) Program, and the Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery funding program. M.S.B.-A. acknowledges the support of the Ontario Graduate Scholarship (OGS), the University of Ottawa Excellence Scholarship, and the University of Ottawa International Experience Scholarship. O.R. acknowledges the support of the Banting Postdoctoral Fellowship of the NSERC. Y.M. was supported by the Mitacs Globalink Research Award. M.J.H. acknowledges the support of the Academy of Finland (Grant No. 308596) and the Flagship of Photonics Research and Innovation (PREIN) funded by the Academy of Finland (Grant No. 320165).

Publication forum classification

  • Publication forum level 3

ASJC Scopus subject areas

  • General Chemistry
  • General Biochemistry,Genetics and Molecular Biology
  • General Physics and Astronomy

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