Quasi-BIC Mode Lasing in a Quadrumer Plasmonic Lattice.
Journal
ACS photonics
ISSN: 2330-4022
Titre abrégé: ACS Photonics
Pays: United States
ID NLM: 101634366
Informations de publication
Date de publication:
19 Jan 2022
19 Jan 2022
Historique:
received:
15
09
2021
entrez:
27
1
2022
pubmed:
28
1
2022
medline:
28
1
2022
Statut:
ppublish
Résumé
Plasmonic lattices of metal nanoparticles have emerged as an effective platform for strong light-matter coupling, lasing, and Bose-Einstein condensation. However, the full potential of complex unit cell structures has not been exploited. On the other hand, bound states in continuum (BICs) have attracted attention, as they provide topologically protected optical modes with diverging quality factors. Here, we show that quadrumer nanoparticle lattices enable lasing in a quasi-BIC mode with a highly out-of-plane character. By combining theory with polarization-resolved measurements of the emission, we show that the lasing mode has a topological charge. Our analysis reveals that the mode is primarily polarized out-of-plane as a result of the quadrumer structure. The quality factors of the out-of-plane BIC modes of the quadrumer array can be exceedingly high. Our results unveil the power of complex multiparticle unit cells in creating topologically protected high-
Identifiants
pubmed: 35083367
doi: 10.1021/acsphotonics.1c01416
pmc: PMC8780794
doi:
Types de publication
Journal Article
Langues
eng
Pagination
224-232Informations de copyright
© 2022 The Authors. Published by American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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