STORAGE OF 2000 HOLOGRAMS IN A PHOTOCHEMICAL HOLE-BURNING SYSTEM

By use of a novel recording technique, 2000 high-resolution image holo grams were recorded in a single spectral hole-burning sample at differ ent frequencies and at different values of an applied electric field. We recorded each hologram by sweeping the frequency of a cw laser over a narrow interval while simultaneously changing the hologram phase by 2pi. This swept recording technique produces holograms that have incr eased diffraction efficiency and that exhibit reduced cross talk with respect to conventional frequency-multiplexed holograms.