Fluorescence Coupling to Internal Modes of 1D Photonic Crystals Characterized by Back Focal Plane Imaging.
Back-focal plane imaging
Bloch surface waves
Fluorescence
Internal modes
One-dimensional photonic crystals
Journal
Journal of optics (2010)
ISSN: 2040-8978
Titre abrégé: J Opt
Pays: England
ID NLM: 101542214
Informations de publication
Date de publication:
Mar 2021
Mar 2021
Historique:
entrez:
3
5
2021
pubmed:
4
5
2021
medline:
4
5
2021
Statut:
ppublish
Résumé
The coupling of fluorescence with surface electromagnetic modes, such as surface plasmons on thin metal films or Bloch surface waves (BSW) on truncated one-dimensional photonic crystals (1DPC), are presently utilized for many fluorescence-based applications. In addition to the surface wave, 1DPCs also support other electromagnetic modes that are confined within the 1DPC structure. These internal modes (IMs) have not received much attention for fluorescence coupling due to lack of spatial overlap of their electric fields with the surface bound fluorophores. However, our recent studies have indicated that the fluorescence coupling with IMs occurs quite efficiently. This observed internal mode-coupled emission (IMCE) is (similar to BSW-coupled emission) indeed wavelength dependent, directional and S-polarized. In this paper, we have carried out back-focal plane (BFP) imaging to reveal that the IMs of 1DPCs can couple with surface bound excited dye molecules, with or without a BSW mode presence. Depending on the emission wavelength, the coupling is observed with BSW and IMs or only IMs of the 1DPC structure. The experimental results are well matching with numerical simulations. The occurrence of IMCE regardless of the availability of BSWs removes the dependence on just the surface mode for obtaining coupled emission from 1DPCs. The observation of IMCE is expected to widen the scope of 1DPCs for surface-based fluorescence sensing and assays.
Identifiants
pubmed: 33936580
doi: 10.1088/2040-8986/abd986
pmc: PMC8082491
mid: NIHMS1691522
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : NIGMS NIH HHS
ID : R01 GM125976
Pays : United States
Organisme : NIGMS NIH HHS
ID : R21 GM129561
Pays : United States
Organisme : NIH HHS
ID : S10 OD019975
Pays : United States
Organisme : NCRR NIH HHS
ID : S10 RR026370
Pays : United States
Déclaration de conflit d'intérêts
Disclosures. The authors declare no conflicts of interest.
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