Circuit Analysis in Metal-Optics
Abstract
We provide electrical circuit descriptions for bulk plasmons, single surface plasmons, and parallel-plate plasmons. Simple circuits can reproduce the exactly known frequency versus wave-vector dispersion relations for all these cases, with reasonable accuracy. The circuit paradigm directly provides a characteristic wave-impedance, Zo, that is rarely discussed in the context of plasmonics. The case of a single-surface-plasmon is particularly interesting since it can be modeled as a transmission line, even though there is no return current conductor. The capacitance/unit length and the Faraday inductance/unit length, of a flat metal surface, are C'=2epsilon_okW, and L'=epsilon_o/2kW respectively, (where k is wave-vector, and W is the width of the flat metal surface). We believe that many other metal-optic geometries can be described within the circuit paradigm, with the prerequisite that the distributed capacitance and inductance must be calculated for each particular geometry
Cite
@article{arxiv.1006.3126,
title = {Circuit Analysis in Metal-Optics},
author = {Matteo Staffaroni and Josh Conway and Shantha Vedantam and Japeck Tang and Eli Yablonovitch},
journal= {arXiv preprint arXiv:1006.3126},
year = {2015}
}