We present novel, to our knowledge, methods for the analytical design and recording of planar holographic Optical elements in thick materials. The recording of each planar holographic element is done by interference of two aspherical waves that are derived from appropriately designed computer-generated holograms such that the element has the desired grating function for minimizing aberrations and closely fulfills the Bragg condition over its entire area. The design and recording methods are described, along with calculated results of representative elements.#1998 Optical Society of America OCIS codes: 090.2890, 090.1760, 090.2900.
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