Journal
RESULTS IN PHYSICS
Volume 45, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2023.106247
Keywords
Surface enhanced Raman scattering; Plasmonic waveguide sensor; Slot resonator; Electric field enhancement
Ask authors/readers for more resources
A grating-assisted hybrid plasmonic slot resonator is proposed to enhance surface-enhanced Raman scattering (SERS) detection on a chip. By introducing a dielectric Bragg grating and a gold baffle into the hybrid plasmonic slot waveguide as two mirrors, a plasmonic-dielectric cavity is formed, in which the constructive interference of the input pump light greatly enhances the electric field. The grating reflects the wasted pump light for reverse secondary coupling and acts as a built-in notch filter for filtering out pump light from Raman scattered light simultaneously, improving the coupling efficiency and achieving a compact and miniaturized SERS sensor.
A grating-assisted hybrid plasmonic slot resonator is proposed and theoretically investigated as an on-chip surface-enhanced Raman scattering (SERS) sensor. A dielectric Bragg grating and a gold baffle are introduced into the hybrid plasmonic slot waveguide as two mirrors to form a plasmonic-dielectric cavity, in which the constructive interference of the input pump light greatly enhances the electric field. The grating reflects the wasted pump light for reverse secondary coupling and acts as a built-in notch filter for filtering out pump light from Raman scattered light simultaneously, improving the coupling efficiency and realizing a compact and miniaturized on-chip SERS sensor. Both the volumetric electric field enhancement and Raman collection efficiency are taken into account. The proposed scheme provides a simple, effective and universal method for improving the performance of the plasmonic-antennas-type waveguide-based SERS sensors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available