[13a-2C-1~11] 4.1 Plasmonics

▲ [13a-2C-11] Anticrossing behavior of surface plasmon polariton dispersions in metal-insulator-metal structure

〇(DC)Siham Refki^1,2,3,4, Shinji Hayashi^1,5, Hidekazu Ishitobi^3,4, Zouheir Sekkat^1,2,4, Yasushi Inouye^3,4, Satoshi Kawata⁴ (1.Optics and Photonics Center, Moroccan Foundation for Advanced Science, Innovations and Research (MAScIR), Rabat 10100, Morocco, 2.Faculty of Sciences, University Mohammed V, Rabat 10010, Morocco, 3.Graduate School of Frontier Biosciences, Osaka University, Osaka 585-0871, Japan, 4.Graduate School of Engineering, Osaka University, Osaka 585-0871, Japan, 5.Graduate School of Engineering, Kobe University, Kobe 657-8501, Japan)

Keywords:Metal-insulator-metal structure,Anti-crossing behavior,surface plasmon polaritons

The anticrossing behavior of dispersion curves of the surface plasmon polaritons supported by metal-insulator-metal structures are studied experimentally and theoretically. Samples consisting of a poly(methyl methacrylate) layer sandwiched by Ag films are prepared and their wavelength scan attenuated total reflection spectra is measured. The dispersion relations obtained from the wavelength-scan spectra exhibit clearly the anticrossing behavior that arises from the coupling of the modes. The experimental dispersion relations are in good agreement with theoretical ones.