IncoherentDisk

IncoherentDisc models the reflected return from an optically rough reflective disk illuminated by a uniform intensity plane wave. It has a single Light output, representing the transmitted light. The reflected return is modeled using multiple independent speckle realizations. To generate each speckle realization, we create a field with the reflected-intensity map and a spatially uncorrelated random phase map (each speckle realization is formed just as in the CoherentTarget module): this field is then propagated to the subsequent sensor plane to form one speckle realization. Finally, the intensities at the sensor plane of a specified number of speckle patterns are simply added. The principal degree of freedom in the model is the number of speckle realizations to be added. See the LightLike User Guide for further discussion of the properties and options of LightLike's rough-reflector models. CoherentTarget, IncoherentReflector and PartiallyCoherentReflector are LightLike's three basic physical models for representing wave-optics scattering from an optically-rough surface.