Grating-coupled excitation of multiple surface plasmon-polariton waves
Grating-coupled excitation of multiple surface plasmon-polariton waves
The excitation of multiple surface plasmon-polariton (SPP) waves of different linear polarization states and phase speeds by a surface-relief grating formed by a metal and a rugate filter, both of finite thickness, was studied theoretically, using rigorous coupled-wave analysis. The incident plane wave can be either $p$ or $s$ polarized. …