High-Q Plasmonic Resonances: Fundamentals and Applications

Baoqing Wang, Peng Yu*, Wenhao Wang, Xutao Zhang, Hao-Chung Kuo, Hongxing Xu, Zhiming M. Wang

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

90 Scopus citations


Subwavelength confinement of light with plasmonics is promising for nanophotonics and optoelectronics. However, it is nontrivial to obtain narrow plasmonic resonances due to the intrinsically high optical losses and radiative damping in metallic structures. In this review, a thorough summary of the recent research progress on achieving high-quality (high-Q) factor plasmonic resonances is provided, emphasizing the fundamentals and six resonant mode types, including surface lattice resonances, multipolar resonances, plasmonic Fano resonances, plasmon-induced transparency, guided-mode resonances, and Tamm plasmon resonances. The applications of high-Q plasmonic resonances in spectrally selective thermal emission, sensing, single-photon emission, filtering, and band-edge lasing are also discussed.

Original languageEnglish
Article number2001520
Pages (from-to)1-30
Number of pages30
JournalAdvanced Optical Materials
Issue number7
StatePublished - 6 Apr 2021


  • high quality factors
  • low optical loss
  • narrow resonance
  • plasmonic resonances
  • resonant mechanisms


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