Open AccessEnhanced SPR sensitivity using periodic metallic structures
Author(s) -
Colin J. Alleyne,
Andrew G. Kirk,
R. C. McPhedran,
N. A. Nicorovici,
D. Maystre
Publication year - 2007
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.008163
Subject(s) - materials science , optics , grating , surface plasmon , refractive index , dispersion (optics) , sensitivity (control systems) , diffraction grating , surface plasmon resonance , surface plasmon polariton , optoelectronics , plasmon , nanotechnology , physics , electronic engineering , engineering , nanoparticle
A sinusoidal silver grating is used to create a six-fold enhancement of the SPR response compared to a flat surface. The grating parameters are chosen to create a surface plasmon bandgap and it is shown that the enhancement of the sensitivity to bulk sample index occurs when operating near the bandgap. The Kretschmann configuration is considered and the Boundary Element Method is used to generate the dispersion curves.