Abstract
It is well known that only the electromagnetic theory of Maxwell permits the determination of the distribution of the energy diffracted between the waves of different orders. The numerical computation shows that it is not always possible, as has been assumed since Rayleigh, to satisfy Maxwell’s equations and the boundary conditions by representing the diffracted field by an infinite sum of plane waves. This method can only be used in the case of sufficiently flat gratings. A new formulation of the problem usable for much deeper grooves is given.
© 1965 Optical Society of America
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