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The package is codes of Finite Difference Time Domain Method for solving Dispersive Media with TGM and ADE Method. These are Python scripts (.py) and GNUPlot Scripts (.gp). lorentz1d.py and tgm1d.py are solvers to solves one dimensional electromagnetic wave reflection with Lorentz Dispersive Media. lorentz1d is coded with ADE method, a convensional method and tgm1d is coded with Transient Green Method (The paper is at arXiv:2003.08081 https://arxiv.org/abs/2003.08081).

% python tgm1d.py 20

to solve numerically for 20GHz pole Lorentz media. After a while this generate a file, "tgm1d.data". And then,

% python lorentz1d.py 20

to generate "lorentz1d.data" In order to calculate the reflection coefficients, use reflect.py.

% python reflect.py tgm1d.data

% python reflect.py lorentz1d.data

Use gnuplot to plot the result.

% gnuplot

load 'reflection.gp'

to display the result.

GPL3.