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Anisotropic confinement of chromophores Induces second-order nonlinear optics in a nanoporous photonic metamaterial
Citation Link: https://doi.org/10.15480/882.14146
Publikationstyp
Journal Article
Date Issued
2021-02-15
Sprache
English
TORE-DOI
TORE-URI
Journal
Volume
46
Issue
4
Start Page
845
Citation
Optics Letters 46 (4): 845-848 (2021-02-15)
Publisher DOI
Scopus ID
ArXiv ID
Publisher
Soc.
Second-order nonlinear optics is the base for a large variety of devices aimed at the active manipulation of light. However, physical principles restrict its occurrence to non-centrosymmetric, anisotropic matter. This significantly limits the number of base materials exhibiting nonlinear optics. Here, we show that embedding chromophores in an array of conical channels 13 nm across in monolithic silica results in mesoscopic anisotropic matter and thus in a hybrid material showing second-harmonic generation (SHG). This non-linear optics is compared to the one achieved in corona-poled polymer films containing the identical chromophores. It originates in confinement-induced orientational order of the elongated guest molecules in the nanochannels. This leads to a non-centrosymmetric dipolar order and hence to a non-linear light-matter interaction on the sub-wavelength, single-pore scale. Our study demonstrates that the advent of large-scale, self-organised nanoporosity in monolithic solids along with confinement-controllable orientational order of chromophores at the single-pore scale provides a reliable and accessible tool to design materials with a nonlinear meta-optics.
Subjects
Physics - Optics
Physics - Mesoscopic Systems and Quantum Hall Effect
Physics - Materials Science
physics.app-ph
Physics - Chemical Physics
DDC Class
530: Physics
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Name
2102.05322v1.pdf
Type
Main Article
Size
12.25 MB
Format
Adobe PDF