RT Journal Article
T1 Ultra-narrow spectral response of a hybrid plasmonic-grating sensor
A1 Elshorbagy, Mahmoud Hamdy Mohamed
A1 Cuadrado Conde, Alexander
A1 García Cámara, Braulio
A1 Vergaz Benito, Ricardo
A1 Gómez Pedrero, José Antonio
A1 Alda, Javier
AB We configure and analyze a nanostructured device that hybridizes grating modes and surface plasmon resonances. The model uses an effective index of refraction that considers the volume fraction of the involved materials, and the propagation depth of the plasmon through the structure. Our geometry is an extruded low-order diffraction grating made of dielectric nano-triangles. Surface plasmon resonances are excited at a metal/dielectric interface, which is separated from the analyte by a high-index dielectric layer. The optical performance of the refractometric sensor is highly competitive in sensitivity and figure of merit (FOM) because of the the ultra-narrow spectral response (below 0.1 nm). Moreover, it is operative within a wide range of the index of refraction (from 1.3 till 1.56), and also works under normal incidence conditions.
PB IEEE
SN 1530-437X
YR 2019
FD 2019-12-18
LK https://hdl.handle.net/20.500.14352/6051
UL https://hdl.handle.net/20.500.14352/6051
LA eng
NO Ministerio de Economía y Competitividad (MINECO)/FEDER
NO Comunidad de Madrid
NO Ministry of Higher Education of Egypt
DS Docta Complutense
RD 1 may 2024