Quasi-guided modes resulting from the band folding effect in a photonic crystal slab for enhanced interactions of matters with free-space radiations.
guided modes
light–matter interactions
photonic crystal slab
Journal
Beilstein journal of nanotechnology
ISSN: 2190-4286
Titre abrégé: Beilstein J Nanotechnol
Pays: Germany
ID NLM: 101551563
Informations de publication
Date de publication:
2023
2023
Historique:
received:
13
10
2022
accepted:
14
02
2023
entrez:
17
3
2023
pubmed:
18
3
2023
medline:
18
3
2023
Statut:
epublish
Résumé
We elucidate that guided modes supported by a regular photonic crystal slab structure composed of a square lattice of air holes in a silicon slab will transition into quasi-guided (leaky) modes when the radius of every second column of air holes is changed slightly. This intentional geometric perturbation will lead to a doubling of the period in one direction and the corresponding shrinkage of the first Brillouin zone. Because of the translational symmetry in the
Identifiants
pubmed: 36925612
doi: 10.3762/bjnano.14.27
pmc: PMC10012046
doi:
Types de publication
Journal Article
Langues
eng
Pagination
322-328Informations de copyright
Copyright © 2023, Sun et al.
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