, Volume 25, Issue 8, pp 1263-1270

Modeling Electrical Properties of Gold Films at Infrared Frequency Using FDTD Method

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The finite-difference time-domain (FDTD) algorithm is applied to analyze the electrical properties of gold films, whose relative permittivity is described by the Lorentz-Drude model in infrared and optical frequencies. The skin depth and reflectivity are calculated using the frequency-dependent FDTD method. The results are compared to analytical solutions and an excellent agreement is reported.