Simplified model for periodic nanoantennae: linear model and inverse design.
We determine and use a minimal set of numerical simulations to create a simplified model for the spectral response of nanoantennae with respect to their geometric and modeling parameters. The simplified model is then used to rapidly obtain best-fit modeling parameters to match experimental results, accurately predict the spectral response for various geometries, and inversely design antennae to have a desired performance. This method is structure and model independent, and is applied here to both nanoantenna pair arrays and strips modeled using a 3D finite-element method and 2D spatial harmonic analysis, respectively. Typical numerical simulations may need hours per model, whereas this method, after the initial time to obtain a baseline set of simulations, requires only seconds to analyze and generate spectra for new geometries.
Borneman
Joshua
J
Electrical and Computer Engineering Department, Birck Nanotechnology Center, Purdue University, 1206W State Street, West Lafayette, IN 47907, USA. jdbornem@purdue.edu
Chen
Kuo-Ping
KP
Kildishev
Alex
A
Shalaev
Vladimir
V
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D020342:Finite Element Analysis; D008422:Materials Testing; D015233:Models, Statistical; D008962:Models, Theoretical; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics