Self-referenced directional enhanced Raman scattering using plasmon waveguide resonance for surface and bulk sensing Xiu-mei Wan et al -Combined measurement of directional Raman scattering and surface-plasmonpolariton cone from adsorbates on smooth planar gold surfaces Charles K. A. Nyamekye et al -This content was downloaded from IP address 207.241.231.82 on 24/07 Evanescent-wave-coupled emission has been used for reverse Kretschmann fluorescence and Raman spectroscopies with high collection

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... ficiency. However, it has a negative effect on the common surface-enhanced Raman spectroscopy and tip-enhanced Raman spectroscopy without the reverse Kretschmann configuration because the coupling of a large fraction of light power into the substrate impairs the Raman signal backscattered in air. A rough core layer can significantly weaken evanescent-wave-coupled emission, which is conducive to enhancing the backscattered Raman signal. In this work, we theoretically investigate the surface-plasmon-coupled emission and its effects on surface Raman spectroscopy.