Computes the dispersion of a material given material properties. For example, given an absorbance spectrum, this software can estimate the complex refractive index and Chi values. A Windows 32 executable is provided in the Win32 directory. All of the necessary runtime libraries are included. Start by running 'ricalc -h' for command-line options. This software is designed to be used with CMake, so we recommend using it to build the application. This software requires the following libraries for compiling: FFTW - Fast Fourier Transform library -- http://www.fftw.org or CUDA - NVidia's GPU programming toolkit -- https://developer.nvidia.com/ RTS - Real-Time Scraps C++ library (my codebase) -- https://github.com/dmayerich/RTS