Question

[mrproshon93]

Hello,
Thank you for the Kramer-Kronig transformation code you shared. I tried utilizing the code to calculate real permittivity from a frequency-dependent imaginary permittivity data series. I have a query: The cshift, that was incorporated to get around the singularity issue, why did you consider having it as an imaginary term? due to this the calculated real term is a complex number, how do you represent the real permittivity from that complex number? is it the real part of that complex number or is it its absolute value of it? I will be grateful if you could explain a little about this cshift.