Near unity couple in efficiency of surface enhanced Raman scattering in a plasmonic waveguide

Ming Fu; Mónica Mota; Xiaofei Xiao; Andrea Jacassi; Yi Li; Ahad Riaz; Stefan Maier; Rupert Oulton

doi:10.1117/12.2633659

3 October 2022 Near unity couple in efficiency of surface enhanced Raman scattering in a plasmonic waveguide

Ming Fu, Mónica Mota, Xiaofei Xiao, Andrea Jacassi, Yi Li, Ahad Riaz, Stefan Maier, Rupert Oulton

Proceedings Volume PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX; PC121970Y (2022) https://doi.org/10.1117/12.2633659
Event: SPIE Nanoscience + Engineering, 2022, San Diego, California, United States

Abstract

To enhance the Raman scattering efficiency of light by molecules, various techniques relying on either stimulated or surface enhanced Raman scattering (SERS) have been developed. But they are either limited by the poor control of the scattered light, narrow bandwidth of the resonance frequency, or restricted area of field enhancement. Here we present a unique waveguide approach to achieve broadband enhanced Raman scattering of molecules with precisely controlled propagation direction. We demonstrated 99% of the Raman photons can be coupled into the waveguide. The near unity couple efficiency is due to the largely enhanced spontaneous Raman scattering rate in waveguide.

Conference Presentation

Citation Download Citation

Ming Fu, Mónica Mota, Xiaofei Xiao, Andrea Jacassi, Yi Li, Ahad Riaz, Stefan Maier, and Rupert Oulton "Near unity couple in efficiency of surface enhanced Raman scattering in a plasmonic waveguide", Proc. SPIE PC12197, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XX, PC121970Y (3 October 2022); https://doi.org/10.1117/12.2633659

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