  RETICOLO implements the rigorous coupled wave analysis (RCWA) for 1D
(classical and conical diffraction) and 2D crossed gratings. It operates under
a MATLAB environment and incorporates an efficient and accurate toolbox for
computing Bloch modes and visualizing the electromagnetic field in the grating
region. As a spin-off, the Version V9 launched in 2021 includes a toolbox for
the analysis of stacks of arbitrarily anisotropic multilayered thin-films.
