Hybrid mode of Tamm plasmon-polariton and surface plasmon-polariton in 1D photonic crystal/semitransparent metal film is experimentally observed. The hybrid state is excited under conditions of total internal reflection for TM-polarized light. Spectral and angular dependences of the hybrid mode resonances positions are studied in the Kretschmann geometry by the methods of frequency-angular spectroscopy. Coupling between Tamm and surface plasmon-polaritons leads to repulsion of their dispersion curves controlled by metal film thickness. Experimental results are in a good agreement with the numerical calculations.
73.20.Mf Collective excitations
Russia, 119991, Moscow Russia, 119071, Moscow,
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