Abstract

We realized hologram storage within a 0.07-cm2 light spot in thin layers of polyvinyl alcohol matrices doped with Methyl Orange dyes pre irradiated by the 488.0-nm line of an Ar-ion laser with two orthogonal linearly polarized 632.8-nm light beams. By rotation of the sample, multiple-hologram storage was achieved. By controlling the writing time, we have recorded three-hologram and five-hologram images in the same light spot. The mechanism of the multiple-hologram storage in Methyl Orange–doped polyvinyl alcohol thin films is discussed.

© 1995 Optical Society of America

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