Abstract
We report two-way holographic image storage in azo polymers. Urethane-urea copolymers involve two photochemical reactions, photoanisotropic modification and surface modification. We can realize the recording of two holograms(polarization volume hologram due to the anisotropy of azo side chain and surface relief hologram) that have different types of information. This is possible because the polarization volume hologram is rewritable while the surface relief hologram is thermally stable. Using the fact that the polarization volume hologram acts like a half wave plate, we can separately readout the different types of information.
| Original language | English |
|---|---|
| Pages (from-to) | 1619-1623 |
| Number of pages | 5 |
| Journal | Japanese Journal of Applied Physics, Part 2: Letters |
| Volume | 40 |
| Issue number | 3 B |
| Publication status | Published - 2001 Dec 1 |
Keywords
- Cis-trans photoisomerization
- Holographic image storage
- Optical memory
- Surface relief hologram
- Urethane-urea copolymer
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
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Aoshima, Y., Egami, C., Kawata, Y., Sugihara, O., Tsuchimori, M., Watanabe, O., Che, Y., Fujimura, H., & Okamoto, N. (2001). Two-way holographic image storage in photosensitive polymers. Japanese Journal of Applied Physics, Part 2: Letters, 40(3 B), 1619-1623.