Interface matching method for solving surface plasmon modes with damping in plasmonic crystals.
The author proposes an interface matching method for solving surface plasmon modes with damping in plasmonic crystals. The damping constant is considered a crucial parameter instead of a small perturbation to the undamped system. The damping effect is manifest on the complex nature of the eigenfrequency as well as on the eigenfield. For periodic layered structures, the decay factors of the two fundamental modes asymptotically approach gamma/2 in the large-wave-number limit. For two-dimensional plasmonic crystals, the decay factors of surface plasmon modes are gathered around and bounded by gamma/2 .
Chern
Ruey-Lin
RL
Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan, Republic of China. chern@iam.ntu.edu.tw