Hi, friends, Can anyone suggest me a good electromagnetic software package(FDTD) for doing a wave scattering study on an object in a non linear media (2D & 3D). It will be great, if it is a open source package.
A very powerful and well maintained FDTD package is meep from MIT (http://ab-initio.mit.edu/wiki/index.php/Meep). It can handle chi^(2), chi^(3) and probably higher-order optical nonlinearities and even has a short tutorial on this (http://ab-initio.mit.edu/wiki/index.php/Meep_Tutorial/Third_harmonic_generation).
However, the "user interface" means scripting in scheme which takes some getting used to.
Apart from the great package MEEP, you can give a try to the following (only open-source software):
1. EM Explorer - http://www.emexplorer.net/Home.php
2. openEMS - http://openems.de/start/index.php?show=home
3. Angora - http://angorafdtd.org/
Good luck!
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