Open AccessCoupling of plasmon and grating resonances for SERS enhancement
Author(s) -
Sergey Scherbak,
Ekaterina Babich,
Igor Reduto,
A. A. Lipovskiĭ
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1410/1/012185
Subject(s) - materials science , grating , raman scattering , plasmon , silver nanoparticle , surface plasmon resonance , electric field , surface plasmon , localized surface plasmon , etching (microfabrication) , nanoparticle , optoelectronics , scattering , isotropic etching , optics , coupling (piping) , raman spectroscopy , nanotechnology , layer (electronics) , composite material , physics , quantum mechanics
We used thermal poling structuring of glass samples followed by chemical etching and subsequent out-diffusion growth of silver nanoparticles to fabricate periodic arrays of grooves etched in the glass with silver nanoparticles at their bottom. A numerical modeling of optical properties of these periodic structures was performed. We demonstrated that they support both plasmon and grating resonances, which interaction provides additional enhancement of an incident electric field. This can increase surface-enhanced Raman scattering by such biresonant structure.