/// <summary>
/// Initializes a new instance of the <see cref="DrudeLorentzFactor" /> class.
/// </summary>
/// <param name="medium">The medium.</param>
/// <param name="timeStep">The time step.</param>
public DrudeLorentzFactor(DrudeLorentz medium, double timeStep)
: base(medium, timeStep)
{
this.OscillatorCount = medium.OscillatorTerms.Count;
this.SampledLorentzShift1 = new double[this.OscillatorCount];
this.SampledLorentzShift2 = new double[this.OscillatorCount];
this.ElectricLorentz = new double[this.OscillatorCount];
double plasmaFreq = medium.PlasmaTerm.ResonanceFrequency.ToType(SpectrumUnitType.CycleFrequency);
for (int l = 0; l < this.OscillatorCount; l++)
{
double collisionFreq =
medium.OscillatorTerms[l].CollisionFrequency.ToType(SpectrumUnitType.Frequency);
double resonatorFreq =
medium.OscillatorTerms[l].ResonanceFrequency.ToType(SpectrumUnitType.CycleFrequency);
double alfadt = (collisionFreq / 2.0) * timeStep;
double sqrtl =
Math.Sqrt(Math.Pow(resonatorFreq, 2.0) - (Math.Pow(collisionFreq, 2.0) / 4.0));
double betadt = sqrtl * timeStep;
double gammadt = Math.Pow(plasmaFreq, 2.0) / sqrtl * medium.OscillatorTerms[l].StrengthFactor * timeStep;
double exp = Math.Exp(alfadt);
this.SampledLorentzShift1[l] = 2.0 * exp * Math.Cos(betadt);
this.SampledLorentzShift2[l] = Math.Exp(2.0 * alfadt);
this.ElectricLorentz[l] = exp * Math.Sin(betadt) * gammadt;
}
}
public void CalculateOpticalConstants_DrudeLorentz_Gnuplot()
{
// Arrange
var optConst = ParameterHelper.ReadOpticalConstants("opt_const.txt");
var drudeLorentz = new DrudeLorentz();
var dict = new Dictionary <double, Complex>();
foreach (var waveLength in optConst.WaveLengthList)
{
var freq = new SpectrumUnit(waveLength / OpticalConstants.WaveLengthMultiplier,
SpectrumUnitType.WaveLength);
dict.Add(waveLength, drudeLorentz.GetPermittivity(freq));
}
ParameterHelper.WriteOpticalConstants("opt_const_drudeLorentz.txt", dict);
using (var gp = new GnuPlot())
{
gp.HoldOn();
gp.Set("style data lines");
gp.Plot(getPermitivittyFunc(optConst));
gp.Plot(dict);
gp.Wait();
}
// Act
// Assert
}
private void initFactors()
{
this.mediumFactors.Add(
"silver",
() =>
{
var silver = new DrudeLorentz();
return(new DrudeLorentzFactor(silver, this.timeStep));
});
}