DCIM-GPOF Formulation for Electric Dipole Arrays in Multilayer Plasmonic Structures

This work presents a formulation for the analysis of electric dipole arrays in multilayered media, based on the combination of the Discrete Complex Image Method (DCIM) with the Generalized Pencil-of-Function (GPOF) method. The formulation adopts an automatic spectral path in the complex plane, reducing empirical tuning and facilitating the numerical evaluation of the Green's function. The approach captures the collective electromagnetic coupling, showing that the system response emerges from a globally coupled regime. The results reveal spatial patterns associated with the spectral structure of the medium and the array geometry, providing a systematic methodology for the analysis of stratified plasmonic structures.