Abstract
The advantage of the circular polarization of light in updatable holographic responses in an azo-carbazole monolithic dye dispersed acrylate matrix has been investigated. Compared to linear polarization holography, four times higher diffraction efficiency was measured without the depression of the response time. The rise time of the holographic recording becomes faster with the increase in the cycled recording time, and no change in diffraction efficiency was observed in the cycled updatable holographic recording using a circularly polarized light. On the other hand, a significant depression in the diffraction efficiency and a slower rise time were observed in a cycled updatable hologram recording using a linearly polarized light. The advantage of the orthogonal circular polarization of light in updatable holographic responses is discussed on the basis of the difference in the photo-oriented state of the azo-carbazole molecules under the orthogonal circular polarization holographic recording and the parallel linear polarization state.
Published Version
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