Abstract

A method is described for computing the light flux transmitted by a thick grating, which can be either an amplitude grating, a phase grating, or a combination of the two. The flux is computed for a number of planes behind the grating and for a number of angles of illumination, in order to simulate contact printing of a thick grating into a thick receiver. The applicability of the thin-grating concepts of MTF and linear superposition to thick gratings is considered. The validity of such application is checked by computing the flux transmitted by thick gratings whose spatial-frequency contents were chosen so that comparison can be made with the transmitted flux predicted by linear-systems concepts.

© 1974 Optical Society of America

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