Add the Diffraction Order subnode to the
Grating feature. Each
Diffraction Order subnode added releases a transmitted and reflected ray of the specified diffraction order. If no subnodes are present, only the reflected and refracted rays of order 0 are released.
Enter a Diffraction order m (dimensionless). The default is 1.
When Intensity computation is set to
Compute intensity,
Compute intensity and power,
Compute intensity in graded media, or
Compute intensity and power in graded media in the physics interface
Intensity Computation section, 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.