Photonics Research Group Home
Ghent University Journals/Proceedings
About People Research Publications Education Services
 IMEC
intern

 

Publication detail

Authors: Y. Li, H. Zhao, A. Raza, S. Clemmen, R. Baets
Title: Surface-enhanced Raman spectroscopy based on plasmonic slot waveguides with free-space oblique illumination
Format: International Journal
Publication date: 2/2020
Journal/Conference/Book: Journal of Quantum Electronics
Editor/Publisher: IEEE, 
Volume(Issue): 56(1) p.paper 7200108 (8 pages)
DOI: 10.1109/jqe.2019.2946839
Citations: 6 (Dimensions.ai - last update: 24/3/2024)
Look up on Google Scholar
Download: Download this Publication (3.1MB) (3.1MB)

Abstract

We report a novel on-chip approach for surface-enhanced Raman spectroscopy (SERS) using a plasmonic slot waveguide. The Raman signal is excited by free-space excitation and is collected by the waveguide. A significant signal-to background-ratio (SBR) enhancement, compared to the case of back-scattered Raman spectroscopy with waveguide-mode excitation, is demonstrated on a silicon nitride plasmonic slot waveguide with a 7-mm access waveguide. The flexible adjustment of the incident angle in free space and modification of waveguide geometry enables the further optimization of the pump-to-Stokes conversion efficiency. The combination of high SBR and long access waveguide allows the integration with additional photonics devices (sources, filters, spectrometers) on the same chip.

Related Research Topics


Back to publication list