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Experimental analysis of waveguide-coupled surface-plasmon-polariton cone properties
Ames Laboratory Accepted Manuscripts
  • Charles K. A. Nyamekye, Iowa State University and Ames Laboratory
  • Qiaochu Zhu, Iowa State University
  • Russell Mahmood, Iowa State University
  • Stephen C. Weibel, Surface Photonics Inc.
  • Andrew C. Hillier, Iowa State University and Ames Laboratory
  • Emily A. Smith, Iowa State University and Ames Laboratory
Publication Date
Ames Laboratory; Chemistry; Chemical and Biological Engineering
Report Number
IS-J 9715
Journal Title
Analytica Chimica Acta

Experimental data for waveguide-coupled surface-plasmon-polariton (SPP) cones generated from dielectric waveguides is presented. The results demonstrate a simpler route to collect plasmon waveguide resonance (i.e., PWR) data. In the reverse-Kretschmann configuration (illumination from the sample side) and Kretschmann configuration (illumination from the prism side), all the waveguide modes are excited simultaneously with p- or s-polarized incident light, which permits rapid acquisition of PWR data without the need to scan the incident angle or wavelength, in the former configuration. The concentric SPP cone properties depend on the thickness and index of refraction of the waveguide. The angular intensity pattern of the cone is well-matched to simulation results in the reverse-Kretschmann configuration, and is found to be dependent on the polarization of the incident light and the polarization of the waveguide mode. In the Kretschmann geometry, all waveguide-coupled SPP cones are measured at incident angles that produce attenuated light reflectivity. In addition, the enhanced electric field produced under total internal reflection allows high signal-to-noise ratio multimodal spectroscopies (e.g., Raman scattering, luminescence) to measure the chemical content of the waveguide film, which traditionally is not measured with PWR.

DOE Contract Number(s)
Iowa State University Digital Repository, Ames IA (United States)
Citation Information
Charles K. A. Nyamekye, Qiaochu Zhu, Russell Mahmood, Stephen C. Weibel, et al.. "Experimental analysis of waveguide-coupled surface-plasmon-polariton cone properties" Vol. 1048 (2018) p. 123 - 131
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