Mode-Matching Enhancement of Second-Harmonic Generation with Plasmonic Nanopatch Antennas.
Journal
ACS photonics
ISSN: 2330-4022
Titre abrégé: ACS Photonics
Pays: United States
ID NLM: 101634366
Informations de publication
Date de publication:
16 Dec 2020
16 Dec 2020
Historique:
received:
05
10
2020
entrez:
28
12
2020
pubmed:
29
12
2020
medline:
29
12
2020
Statut:
ppublish
Résumé
Plasmonic enhancement of nonlinear optical processes confront severe limitations arising from the strong dispersion of metal susceptibilities and small interaction volumes that hamper the realization of desirable phase-matching-like conditions. Maximizing nonlinear interactions in nanoscale systems require simultaneous excitation of resonant modes that spatially and constructively overlap at all wavelengths involved in the process. Here, we present a hybrid rectangular patch antenna design for optimal second-harmonic generation (SHG) that is characterized by a non-centrosymmetric dielectric/ferroelectric material at the plasmonic hot spot. The optimization of the rectangular patch allows for the independent tuning of various modes of resonances that can be used to enhance the SHG process. We explore the angular dependence of SHG in these hybrid structures and highlight conditions necessary for the maximal SHG efficiency. Furthermore, we propose a novel configuration with a periodically poled ferroelectric layer for an orders-of-magnitude enhanced SHG at normal incidence. Such a platform may enable the development of integrated nanoscale light sources and on-chip frequency converters.
Identifiants
pubmed: 33365359
doi: 10.1021/acsphotonics.0c01545
pmc: PMC7747867
doi:
Types de publication
Journal Article
Langues
eng
Pagination
3333-3340Informations de copyright
© 2020 American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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