Abstract
Surface plasmons’ (SPs) excitation in Kretschmann configuration, where the thin metallic layer is substituted by a metal-dielectric multilayer (MDML) structure is analysed numerically. For numerical analysis the method of single expression (MSE) is used. Derivation of MSE equations for analyzing TM polarized wave incident on a multilayer structure is presented. First, for validation, an excitation of SPs in conventional Kretschmann configuration with single silver layer is analysed. Further, four possible combinations of MDML $$\hbox {(silver/SiO}_\mathrm{2})$$ structures of different alternation of outermost layers are analysed on the subject of SPs excitation. It is obtained that MDML structures can support SPs at specific number of layers, when the total thickness of metallic layers in MDML structure is less than the thickness of single metallic layer in conventional Kretschmann configuration. It is found, that specific angles of SPs excitation for MDML structures are greater than that for conventional Kretschmann configuration.
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