The Diffraction Order subnode is available from the context menu (right-click the
Cross Grating parent node) or from the
Physics toolbar,
Attributes menu. Each
Diffraction Order subnode can either release transmitted rays, reflected rays, or both transmitted and reflected rays of the specified order, depending on the option selected from the
Rays to release list in the parent
Cross Grating node.
Enter the Diffraction orders m and
n (dimensionless). The default is
m = n = 0 for the first
Diffraction Order subnode added. When more diffraction orders are added to the model, the new default created by adding 1 to either
m or
n, whichever is lowest. If
m and
n are equal, then
m is incremented by 1.
When the ray intensity or power is solved for, enter the Reflectance R and the
Transmittance T (both dimensionless). If the reflectance or transmittance of a certain diffraction order is exactly zero, that diffraction order will not be released.