Deterministic diffusers for holography.

We present here a new family of diffusers suitable for use in holography. We first exhibit a method for obtaining mathematical descriptions of diffusers that give nearly uniform amplitude at the hologram before insertion of an object. From these diffusers we select a few that redundantly map information into the hologram. Finally, we present a method of comparing the performance of different diffusers using a computer simulation technique that has a simple experimental analog.