PLRC AND ADE IMPLEMENTATIONS OF DRUDE- CRITICAL POINT DISPERSIVE MODEL FOR THE FDTD METHOD

We describe the implementations of Drude-critical point model for describing dispersive media into flnite difierence time domain algorithm using piecewise-linear recursive-convolution and auxiliary difierential equation methods. The advantages, accuracy and stability of both implementations are analyzed in detail. Both implementations were applied in studying the transmittance and re∞ectance of thin metal fllms, and excellent agreement is observed between analytical and numerical results.

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