Extraction of lorentz model parameters for dielectrics and their application in nanoplasmonics

Kh Arif Shahriar,Ikramul Hasan Sohel,Md Mahamudun Arif Joy,Rakibul Hasan Sagor,Md Ghulam Saber

Electrical and Computer Engineering（2014）

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摘要

The Lorentz model parameters for alumina, aluminum arsenide, zinc oxide, potassium bromide, graphene and gallium arsenide are optimized using a nonlinear optimization algorithm based on the Hooke and Jeeves method. The complex relative permittivity of each of the mentioned materials is calculated over a long wavelength range using the optimized parameters. The obtained permittivity curves exhibit very good match with those obtained from the experimental results. The symmetric SPP mode propagation through MDM waveguides containing alumina and aluminum arsenide as dielectric layers sandwiched between layers of silver has been investigated using their optimized modeling parameters.

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关键词

ii-vi semiconductors,iii-v semiconductors,alumina,gallium arsenide,graphene,optimisation,permittivity,plasmonics,polaritons,potassium compounds,surface plasmons,wide band gap semiconductors,zinc compounds,ag-alas-ag,al2o3,alas,c,gaas,hooke-jeeves method,kbr,lorentz model parameter extraction,mdm waveguides,zno,aluminum arsenide,complex relative permittivity,dielectric layers,nanoplasmonics,nonlinear optimization algorithm,optimized modeling parameters,optimized parameters,permittivity curves,potassium bromide,symmetric spp mode propagation,zinc oxide,finite-difference time-domain,hooke and jeeves algorithm,lorentz model,material modeling,material optics,optical properties,plasmonic waveguide,surface plasmon polariton,finite difference time domain

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