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Specification of Diffraction Efficiencies for Grating Regions


In modern optical systems, gratings are no longer just components in their own right: they also often appear etched into or deposited onto the surface of other elements. When this is the case, they may cover only part of that surface. This is what we call a “grating region”. When simulating a system which contains such a component in VirtualLab Fusion, the user can choose between modeling the grating rigorously or inputting the values of the efficiencies ad hoc when the behaviour of the grating is known, or a good guess is available. Both procedures are illustrated here.

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