Abstract
DuPont’s HRF-150 photopolymer film is investigated for use in three-dimensional holographic memories. Measurements of sensitivity, hologram persistence, the lateral spread of the photoinitiated reaction, and the variation of diffraction efficiency with modulation depth, spatial frequency and tilt angle, and intensity are reported. We observed that the diffraction efficiency of the HRF-150 photopolymer for a given exposure decreases with increases in intensity and grating tilt angle. The holograms were reconstructed for long periods of time at room temperature. The photoinitiated nondestructively reaction spread less than 100 μm over a period of 16 h.
© 1994 Optical Society of America
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