Active Formation of Friedrich–Wintgen Bound States in the Continuum in a Hybrid Plasmonic–Photonic Structure

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The Friedrich–Wintgen bound state in the continuum (FW BIC) provides a unique approach for achieving high quality factor (Q‐factor) resonance, which has attracted wide attention and promoted the development of various applications. However, the FW BIC is usually considered as accident BIC resulting from the continuous parameters tuning, and a systematic approach to generate the FW BIC is still lacking. To address this issue, a method is proposed for actively generating FW BIC in a hybrid plasmonic–photonic structure near the commercially important communication wavelength. The hybrid system comprises an electrically tunable borophene plasmon mode and a Brillouin zone folding‐induced BIC (BZF‐BIC) supported by a dielectric dimer grating. More interestingly, the BZF‐BIC can be directly excited by the localized borophene plasmon (LBP) mode through near‐field coupling as LBP mode can be considered as a dipole source. The interaction between them can further form the FW BIC and support electromagnetically induced transparency‐like with maximum group index up to 2043, indicating its great potential for slow light applications. The results provide a promising strategy and theoretical support for the generation of FW BIC in active plasmonic optical devices.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Active Formation of Friedrich–Wintgen Bound States in the Continuum in a Hybrid Plasmonic–Photonic Structure ; day:24 ; month:09 ; year:2024 ; extent:8
Advanced photonics research ; (24.09.2024) (gesamt 8)

Creator
Yan, Xiao‐Fei
Wang, Xin‐Yang
Lin, Qi
Wang, Ling‐Ling
Liu, Gui‐Dong

DOI
10.1002/adpr.202400145
URN
urn:nbn:de:101:1-2409241432275.670581694768
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:23 AM CEST

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Associated

  • Yan, Xiao‐Fei
  • Wang, Xin‐Yang
  • Lin, Qi
  • Wang, Ling‐Ling
  • Liu, Gui‐Dong

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